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Medical Dictionary - Dictionary of Medicine and Human Biology


Medical Dictionary


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lymphadenitis (lim′-fad′e-ni′tis)
Inflammation of a lymph node or lymph nodes. [lymphadeno- + G. -itis, inflammation] dermatopathic l. SYN: dermatopathic lymphadenopathy. mesenteric l. SYN: mesenteric adenitis. paratuberculous l. old term for chronic inflammation of certain lymph nodes, not specifically tuberculous ( i.e., tubercle bacilli are not demonstrable), but associated with proved tuberculous inflammation in another part or organ of the body. regional l. inflammation of a group of lymph nodes receiving drainage from a site of infection. regional granulomatous l. SYN: catscratch disease. tuberculosis l. SYN: tuberculous l.. tuberculous l. l. resulting from infection by Mycobacterium tuberculosis; tuberculosis of the lymph nodes. SYN: tuberculosis l..

lymphadeno-, lymphaden-
The lymph nodes. [L. lympha, spring water, + G. aden, gland]

lymphadenography (lim-fad′e-nog′ra-fe)
Radiographic visualization of lymph nodes after injection of a contrast medium; lymphography. [lymphadeno- + G. grapho, to write]

lymphadenoid (lim-fad′e-noyd)
Relating to, or resembling, or derived from a lymph node. [lymphadeno- + G. eidos, resemblance]

lymphadenoma (lim-fad′e-no′ma)
Obsolete term for: 1. An enlarged lymph node. 2. SYN: Hodgkin disease. [lymphadeno- + G. -oma, tumor]

lymphadenopathy (lim-fad-e-nop′a-the)
Any disease process affecting a lymph node or lymph nodes. [lymphadeno- + G. pathos, suffering] angioimmunoblastic l. with dysproteinemia (AILD) a lymphoproliferative disorder characterized by generalized l., hepatosplenomegaly, fever, sweats, weight loss, skin lesions, and pruritus with hypergammaglobulinemia; occurs primarily in older adults, often with fatal outcome. Proliferation of B cells, deficiency of T cells have been demonstrated. SYN: immunoblastic l.. bulky l. SYN: bulky disease. dermatopathic l. enlargement of lymph nodes, with proliferation of pale-staining interdigitating reticulum cells and macrophages containing fat and melanin; secondary to various forms of dermatitis. SYN: dermatopathic lymphadenitis. immunoblastic l. SYN: angioimmunoblastic l. with dysproteinemia. persistent generalized l. a syndrome characterized by reactive hyperplasia of lymph nodes (of at least one month's duration and at two different body sites, not including the inguinal area) in patients infected with the human immunodeficiency virus. The lymph node lesions progress from benign reactive hyperplasia through a stage of mixed follicular hyperplasia, to follicular involution with lymphocyte depletion. Many go on to a malignant non-Hodgkin lymphoma.

lymphadenosis (lim-fad′e-no′sis)
The basic underlying proliferative process that results in enlargement of lymph nodes, as in lymphocytic leukemia and certain inflammations. [lymphadeno- + G. -osis, condition] benign l. SYN: infectious mononucleosis.

lymphadenovarix (lim-fad′e-no-va′riks)
Varicose deformity of a lymph node associated with lymphangiectasis. [lymphadeno- + L. varix]

lymphagogue (limf′a-gog)
An agent that increases the formation and flow of lymph. [lymph + G. agogos, drawing forth]

lymphangeitis (lim-fan′je-i′tis)
SYN: lymphangitis.

lymphangi-
See lymphangio-.

lymphangial (lim-fan′je-al)
Relating to a lymphatic vessel.

lymphangiectasis, lymphangiectasia (lim-fan′je-ek′ta-sis, -ek-ta′ze-a)
Dilation of the lymphatic vessels, the basic process that may result in the formation of a lymphangioma. SYN: lymphectasia, telangiectasia lymphatica. [lymphangio- + G. ektasis, a stretching] cavernous l. SYN: lymphangioma cavernosum. cystic l. SYN: lymphangioma cysticum. intestinal l. [MIM*152800] familial l. with intestinal loss of lymph causing lymphocytopenia and hypogammaglobulinemia. simple l. SYN: lymphangioma simplex.

lymphangiectatic (lim-fan′je-ek-tat′ik)
Relating to or characterized by lymphangiectasis.

lymphangiectomy (lim-fan′je-ek′to-me)
Excision of a lymph channel. [lymphangio- + G. ektome, excision]

lymphangiitis (lim-fan′je-i′tis)
SYN: lymphangitis.

lymphangio-, lymphangi-
The lymphatic vessels. [L. lympha, spring water, + G. angeion, vessel]

lymphangioendothelioma (lim-fan′je-o-en′do-the-le-o′ma)
Old term for combined lymphatico-venous malformation. [lymphangio- + endothelium + -oma, tumor]

lymphangiography (lim-fan′je-og′ra-fe)
Radiographic demonstration of lymphatics and lymph nodes following the injection of a contrast medium; lymphography. [lymphangio- + G. grapho, to write]

lymphangioleiomyomatosis
A rare disorder of unknown etiology seen in women of reproductive age and in patients of either sex with tuberous sclerosis. Pulmonary complications are due to hamartomatous proliferation of smooth muscle cells preferentially along bronchovascular structures resulting in obliteration of the airways and consecutive development of cysts in the lungs. Usually progressive, leading to death from respiratory failure. Treatment by lung transplantation has been successful. SYN: lymphangiomyomatosis.

lymphangiology (lim-fan-je-ol′o-je)
The branch of medical science concerned with the lymphatic vessels. SYN: lymphology. [lymphangio- + G. logos, study]

lymphangioma (lim-fan′je-o′ma)
Old term for a mass of anomalous lymphatic vessels or channels that vary in size, are usually greatly dilated, and are lined with normal endothelial cells; lymphoid tissue is usually present in the peripheral portions of the lesions, which are present at birth, or shortly thereafter, and probably represent maldevelopment of lymphatic vessels (rather than true neoplasms); they occur most frequently in the neck and axilla, but may also develop in the arm, mesentery, retroperitoneum, and other sites. [lymphangio- + G. -oma, tumor] l. cavernosum a condition of conspicuous dilation of lymphatic vessels in a fairly circumscribed region, frequently with the formation of cavities or “lakes” filled with lymph. SYN: cavernous lymphangiectasis. l. circumscriptum a congenital nevoid lesion consisting of a circumscribed group of tense lymph vesicles. l. cysticum a condition characterized by a fairly well circumscribed group of several or numerous cystlike, dilated vessels or spaces lined with endothelium and filled with lymph. SYN: cystic lymphangiectasis. l. simplex a circumscribed region or focus of several to numerous lymphatic vessels that are moderately dilated. SYN: simple lymphangiectasis. l. tuberosum multiplex a cutaneous lesion characterized by multiple, slightly red, cystlike nodules (located chiefly on the trunk), resulting from fairly large lymphatic vessels and spaces, and groups of proliferating endothelial cells; the lesion has some gross resemblance to spiradenoma, except for the characteristic location. l. xanthelasmoideum a capillary l. with colloid degeneration of the elastic tissues of the skin, characterized by yellow-brown or gray-brown plaques that may be only slightly raised above the surface of the skin.

lymphangiomatous (lim-fan′je-o′ma-tus)
Pertaining to, characterized by, or containing lymphangioma.

lymphangiomyomatosis (lim-fan′ge-o-mi′o-ma-to′sis)
SYN: lymphangioleiomyomatosis. [lymphangio- + myoma + -osis, condition]

lymphangion (lim-fan′je-on)
A lymphatic vessel. See lymph vessels, under vessel. [L. lympha, lymph, + G. angeion, vessel]

lymphangiophlebitis (lim-fan′je-o-fle-bi′tis)
Inflammation of the lymphatic vessels and veins.

lymphangioplasty (lim-fan′je-o-plas-te)
Surgical alteration of lymphatic vessels. [lymphangio- + G. plastos, formed]

lymphangiosarcoma (lim-fan′je-o-sar-ko′ma)
A malignant neoplasm derived from vascular tissue, i.e., an angiosarcoma, in which the neoplastic cells originate from the endothelial cells of lymphatic vessels, usually developing in the arm several years after radical mastectomy.

lymphangiotomy (lim-fan′je-ot′o-me)
Incision of lymphatic vessels. [lymphangio- + G. tome, incision]

lymphangitis (lim-fan-ji′tis)
Inflammation of the lymphatic vessels. SYN: lymphangeitis, lymphangiitis. [lymphangio- + G. -itis, inflammation] l. carcinomatosa extensive lymphatic permeation by tumor cells, with surrounding fibrosis, producing visible or palpable cords, especially in pleura or skin overlying a carcinoma.

lymphapheresis (lim′fa-fe-re′sis)
SYN: lymphocytapheresis.

lymphatic (lim-fat′ik)
1. Pertaining to lymph. 2. A vascular channel that transports lymph. 3. Sometimes used to pertain to a sluggish or phlegmatic characteristic. SYN: vas lymphaticum. [L. lymphaticus, frenzied; Mod. L. use, of or for lymph] afferent l. a l. vessel entering, or bringing lymph to, a node. SYN: afferent vessel (3) , vas lymphaticum afferens. efferent l. SYN: vas efferens (1) .

lymphaticostomy (lim-fat-i-kos′to-me)
Making an opening into a lymphatic duct. [lymphatic + G. stoma, mouth]

lymphatics (lim-fat′iks)
SYN: lymph vessels, under vessel.

lymphatitis (lim-fa-ti′tis)
Obsolete term for inflammation of the lymphatic vessels or lymph nodes. [lymphatic + G. -itis, inflammation]

lymphatology (lim-fa-tol′o-je)
The study of the lymphatic system. [lymphatic + G. logos, study]

lymphatolysis (lim′fa-tol′i-sis)
Obsolete term for destruction of the lymphatic vessels or lymphoid tissue, or both. [lymphatic + G. lysis, dissolution]

lymphatolytic (lim′fa-to-lit′ik)
Pertaining to or characterized by lymphatolysis.

lymphectasia (lim-fek-ta′ze-a)
SYN: lymphangiectasis. [lymph + G. ektasis, a stretching]

lymphedema (limf′e-de′ma)
Swelling (especially in subcutaneous tissues) as a result of obstruction of lymphatic vessels or lymph nodes and the accumulation of large amounts of lymph in the affected region. SEE ALSO: elephantiasis. [lymph + G. oidema, a swelling] congenital l. hereditary l.. hereditary l. permanent pitting edema usually confined to the legs; two types, congenital (Milroy disease [MIM*153100], caused by mutation in the FMS-like tyrosine kinase 4 gene (FLT4) on 5q, or with onset at about the age of puberty (Meige disease [MIM*153200]); autosomal dominant inheritance. l. praecox SYN: primary l.. primary l. a form of l. observed chiefly in young women and girls, characterized by diffuse swelling of the lower extremities. SYN: l. praecox.

lymphemia (lim-fe′me-a)
The presence of unusually large numbers of lymphocytes or their precursors, or both, in the circulating blood. [lymph(ocyte) + G. haima, blood]

lymphization (lim-fi-za′shun)
The formation of lymph.

lymph node [TA]
One of numerous round, oval, or bean-shaped bodies located along the course of lymphatic vessels, varying greatly in size (1–25 mm in diameter) and usually presenting a depressed area, the hilum, on one side through which blood vessels enter and efferent lymphatic vessels emerge. The structure consists of a fibrous capsule and internal trabeculae supporting lymphoid tissue and lymph sinuses; lymphoid tissue is arranged in nodules in the cortex and cords in the medulla of a node, with afferent vessels entering at many points of the periphery. SYN: nodus lymphoideus [TA] , lymphonodus&star, nodus lymphaticus&star, lymph gland, lymphaden, lymphoglandula. abdominal lymph nodes [TA] the parietal and visceral lymph nodes of the abdomen, collectively. SYN: nodi lymphoidei abdominis [TA] . lymph nodes of abdominal organs SYN: visceral lymph nodes of abdomen. accessory lymph nodes [TA] the nodes of the lateral deep cervical group that are located along the accessory nerve; their efferent vessels pass to the supraclavicular lymph nodes. SYN: nodi lymphoidei accessorii [TA] , accessory nerve lymph nodes, companion lymph nodes of accessory nerve, nodi lymphatici comitantes nervi accessorii. accessory nerve lymph nodes SYN: accessory lymph nodes. anorectal lymph nodes SYN: pararectal lymph nodes. anterior axillary lymph nodes pectoral axillary lymph nodes. l. of anterior border of omental foramen [TA] one of the hepatic nodes located adjacent to the omental foramen. SYN: nodus lymphoideus foraminalis [TA] , foraminal l., foraminal node. anterior cervical lymph nodes [TA] the group of lymph nodes located in the anterior region of the neck, divided into superficial and deep groups. SYN: nodi lymphoidei cervicales anteriores [TA] . anterior deep cervical lymph nodes SYN: deep anterior cervical lymph nodes. anterior jugular lymph nodes SYN: anterior superficial cervical lymph nodes. anterior mediastinal lymph nodes SYN: brachiocephalic lymph nodes. anterior superficial cervical lymph nodes [TA] the lymph nodes in the subcutaneous tissue of the anterior region of the neck. SYN: nodi lymphoidei cervicales anteriores superficiales [TA] , anterior jugular lymph nodes, nodi lymphoidei jugulares anteriores. anterior tibial l. [TA] a small inconstant l. in front of the interosseous membrane along the upper part of the anterior tibial vessels. SYN: nodus tibialis anterior [TA] , anterior tibial node. apical axillary lymph nodes [TA] the group of lymph nodes located at the apex of the axillary fossa that receive lymphatic drainage from other groups of axillary nodes and then drain in turn into the subclavian lymphatic trunk. SYN: nodi lymphoidei axillares apicales [TA] . appendicular lymph nodes [TA] visceral nodes along the appendicular vessels in the mesoappendix; they receive afferent vessels from the vermiform appendix and send efferent vessels to the ileocolic lymph nodes. SYN: nodi lymphoidei appendiculares [TA] . l. of arch of azygos vein [TA] a visceral l. of the right brachiocephalic group located adjacent to the arch of the azygos vein. SYN: nodus lymphoideus arcus venae azygos [TA] , l. of azygos arch, nodus lymphoideus arcus venae azygos. lymph nodes around cardia of stomach [TA] a group of lymph nodes surrounding the cardia of the stomach. SYN: anulus lymphaticus cardiae [TA] , cardiac lymphatic ring, lymphatic ring of cardiac part of stomach. axillary lymph nodes [TA] numerous nodes around the axillary veins that receive the lymphatic drainage from the upper limb, scapular region and pectoral region (including mammary gland); they drain into the subclavian trunk. SYN: nodi lymphoidei axillares [TA] , axillary glands. l. of azygos arch SYN: l. of arch of azygos vein. bifurcation lymph nodes SYN: inferior tracheobronchial lymph nodes. brachial lymph nodes SYN: humeral axillary lymph nodes. brachiocephalic lymph nodes located in the superior mediastinum in relation to the great vessels, these nodes receive lymph from the thymus, pericardium, and right side of the heart; their efferent vessels join those of the tracheal nodes to form the bronchomediastinal trunks. SYN: nodi lymphoidei brachiocephalici [TA] , anterior mediastinal lymph nodes, nodi lymphoidei mediastinales anteriores. bronchopulmonary lymph nodes [TA] lymph nodes in the hilum of the lung that receive lymph from the pulmonary nodes, and drain to the tracheobronchial nodes. SYN: nodi lymphoidei bronchopulmonales [TA] , hilar lymph nodes. buccal l. one of the chain of facial lymph nodes located superficial to the buccinator muscle. SYN: nodus lymphoideus buccinatorius [TA] , buccinator node, buccal node, nodus buccinatorius. carinal lymph nodes SYN: inferior tracheobronchial lymph nodes. celiac lymph nodes [TA] visceral nodes located along the celiac trunk that drain lymph from the stomach, duodenum, pancreas, spleen, and biliary tract and drain to the cisterna chyli via the right and left intestinal lymphatic trunks. SYN: nodi lymphoidei coeliaci [TA] . central axillary lymph nodes [TA] nodes located around the midportion of the axillary vein; they receive afferent vessels from the humeral (lateral), pectoral (anterior), and subscapular (posterior) groups of axillary nodes and send efferent vessels to the apical group of axillary nodes; SYN: nodi lymphoidei axillares centrales [TA] . central mesenteric lymph nodes SYN: central superior mesenteric lymph nodes. SEE ALSO: mesenteric lymph nodes. central superior mesenteric lymph nodes [TA] the mesenteric lymph nodes located along the intestinal (jejunal and ileal) branches of the superior mesenteric artery. SYN: nodi lymphoidei superiores centrales [TA] , central mesenteric lymph nodes, middle group of mesenteric lymph nodes. colic lymph nodes SYN: nodi lymphatici colici.left colic lymph nodes, middle colic lymph nodes, right colic lymph nodes. common iliac lymph nodes [TA] parietal nodes located in association with the common iliac vein; they are subdivided into five groups: intermediate common iliac lymph nodes, between the common iliac artery and vein; lateral common iliac lymph nodes lateral to the vein; medial common iliac lymph nodes, medial to the vein; promontorial common iliac lymph nodes at the sacral promontory; and subaortic common iliac lymph nodes, at the bifurcation of the aorta; they all receive afferent vessels from the external and internal iliac nodes and send efferent vessels to the lumbar nodes. SYN: nodi lymphoidei iliaci communes [TA] . companion lymph nodes of accessory nerve SYN: accessory lymph nodes. cubital lymph nodes [TA] two groups of nodes, superficial and deep, lying along the basilic vein above the medial epicondyle; they receive afferents from the ulnar side of the forearm and hand, and send efferents to the brachial nodes. SYN: nodi lymphoidei cubitales [TA] , lymph nodes of elbow. cystic l. [TA] a visceral l. at the neck of the gallbladder draining lymph into the hepatic nodes. SYN: nodus lymphoideus cysticus [TA] , cystic node. deep anterior cervical lymph nodes [TA] the lymph nodes near the larynx, trachea, and thyroid gland. SYN: anterior deep cervical lymph nodes, nodi lymphoidei cervicales anteriores profundi. deep inguinal lymph nodes [TA] several small inconstant nodes (proximal, intermediate, and distal) deep to the fascia lata and medial to the femoral vein; they receive lymph from the deep structures of the lower limb, from the glans penis and from superficial inguinal nodes; efferents pass to the external iliac nodes. SYN: nodi lymphoidei inguinales profundi. deep lateral cervical lymph nodes [TA] the lymph nodes located in the posterior triangle of the neck deep to the investing layer of cervical fascia; they empty into the jugular trunk on the right or left side; the group is subdivided into four smaller chains: superior deep cervical nodes, inferior deep cervical nodes, accessory nodes, and supraclavicular nodes. SYN: nodi lymphoidei cervicales laterales profundi [TA] . deep parotid lymph nodes [TA] the group of lymph nodes associated with the parotid gland lying deep to the parotid masseteric fascia. SYN: nodi lymphoidei parotidei profundi [TA] . lymph nodes of elbow SYN: cubital lymph nodes. external iliac lymph nodes [TA] parietal nodes located in association with the external iliac vein; they are subdivided into three groups: intermediate external iliac lymph nodes, between the vein and the external iliac artery; lateral external iliac lymph nodes, and medial external iliac lymph nodes, medial to the vein; they all receive afferent vessels from the inguinal nodes, lower abdominal wall, and pelvic viscera, and send efferent vessels to the common iliac nodes. SYN: nodi lymphoidei iliaci externi [TA] . facial lymph nodes [TA] a chain of lymph nodes lying along the facial vein that receive afferent vessels from the eyelids, nose, cheek, lip, and gums, and send efferent vessels to the submandibular nodes. SYN: nodi lymphoidei faciales [TA] . fibular l. a small inconstant l. located along the course of the fibular vein (venae comitantes). SYN: nodus lymphoideus fibularis [TA] , fibular node, peroneal l.. foraminal l. SYN: l. of anterior border of omental foramen. gastroduodenal lymph nodes SYN: pyloric lymph nodes. gluteal lymph nodes [TA] parietal nodes of the internal iliac nodes; they are subdivided into two groups: interior gluteal nodes, located along the inferior gluteal vein; superior gluteal nodes located along the superior gluteal vein. SYN: nodi lymphoidei gluteales [TA] . lymph nodes of head and neck [TA] lymph nodes located in and draining the head and neck regions, ultimately draining via the jugular lymphatic trunks. SYN: nodi lymphoidei capitis et colli [TA] . hepatic lymph nodes [TA] visceral nodes located along the hepatic artery as far as the porta hepatis; they drain the liver, gallbladder, stomach, duodenum, and pancreas, and send efferents to the celiac nodes. SYN: nodi lymphoidei hepatici [TA] . hilar lymph nodes SYN: bronchopulmonary lymph nodes. humeral axillary lymph nodes [TA] lymph nodes along the brachial vein that receive lymph drainage from most of the free upper limb and send efferent vessels to the central axillary lymph nodes. SYN: nodi lymphoidei axillares humerales [TA] , lateral axillary lymph nodes&star, nodi lymphoidei axillares laterales&star, brachial lymph nodes, nodi lymphoidei brachiales. ileocolic lymph nodes [TA] visceral nodes located along the ileocolic artery that drain lymph from the ascending colon to the superior mesenteric nodes. SYN: nodi lymphoidei ileocolici [TA] . inferior epigastric lymph nodes [TA] three or four parietal nodes placed along the inferior epigastric vessels; they receive afferents from the lower abdominal wall and empty into the external iliac nodes. SYN: nodi lymphoidei epigastrici inferiores [TA] . inferior mesenteric lymph nodes [TA] visceral nodes located along the inferior mesenteric artery and its branches that drain the upper part of the rectum, the sigmoid colon, and descending colon. SYN: nodi lymphoidei mesenterici inferiores [TA] . inferior phrenic lymph nodes [TA] small lymph nodes associated with the inferior phrenic vessels. SYN: nodi lymphoidei phrenici inferiores [TA] . inferior tracheobronchial lymph nodes [TA] several large lymph nodes inferior to the tracheal bifurcation; they receive afferents from the bronchopulmonary nodes and the heart, and send efferents to the superior tracheobronchial and tracheal nodes. SYN: bifurcation lymph nodes, carinal lymph nodes, nodi lymphoidei tracheobronchiales inferiores. infraauricular deep parotid lymph nodes [TA] small lymph nodes located deep to the parotid fascia and below the ear. SYN: infraauricular subfascial parotid lymph nodes, nodi lymphoidei parotidei profundi infra-auriculares. infraauricular subfascial parotid lymph nodes SYN: infraauricular deep parotid lymph nodes. intercostal lymph nodes [TA] one or two small nodes located posteriorly in each intercostal space; they receive lymph from the parietal pleura, intercostal space, and posterior body wall; the nodes in the upper spaces empty into the thoracic duct; the nodes in the lower spaces form a descending intercostal trunk that opens into the cisterna chyli. SYN: nodi lymphoidei intercostales [TA] . interiliac lymph nodes [TA] several lymph nodes located between the external and internal iliac arteries and the obturator artery; these nodes are considered by some to be part of the medial external iliac nodes. SYN: nodi lymphoidei interiliaci [TA] . intermediate lacunar l. [TA] an inconstant l. of the external iliac nodes frequently occurring between the external iliac artery and vein at the vascular space of the subinguinal compartment. SYN: nodus lymphoideus lacunaris intermedius [TA] , intermediate lacunar node. intermediate lumbar lymph nodes [TA] the chain of lymph nodes located between the aorta and the inferior vena cava. SYN: nodi lymphoidei lumbales intermedii [TA] , lumbar lymph nodes. internal iliac lymph nodes [TA] nodes that lie along the internal iliac artery and its branches; they receive lymph from the pelvic viscera, the gluteal region, and the deep parts of the perineum, and send efferent vessels to the common iliac nodes. SYN: nodi lymphoidei iliaci interni [TA] . interpectoral lymph nodes [TA] small lymph nodes located between the pectoralis major and minor muscles; they receive lymph from the muscles and the mammary gland, and deliver lymph to the axillary lymphatic plexus. SYN: nodi lymphoidei interpectorales [TA] . intraglandular deep parotid lymph nodes [TA] small lymph nodes of the deep parotid group lying within the parotid gland. SYN: nodi lymphoidei parotidei intraglandulares [TA] , intraglandular parotid lymph nodes. intraglandular parotid lymph nodes SYN: intraglandular deep parotid lymph nodes. intrapulmonary lymph nodes [TA] small nodes that occur along the bronchi within the parenchyma of the lung; they receive the drainage from localized areas of the lung and send efferents to bronchopulmonary nodes. SYN: nodi lymphoidei intrapulmonales [TA] , nodi lymphoidei pulmonales, pulmonary lymph nodes. jugulodigastric l. [TA] a prominent l. in the deep lateral cervical group lying below the digastric muscle and anterior to the internal jugular vein; it receives lymphatic drainage from the pharynx, palatine tonsil, and tongue. SYN: nodus lymphoideus jugulodigastricus [TA] , jugulodigastric node, subdigastric node. juguloomohyoid l. [TA] a l. of the lateral deep cervical group that lies above the intermediate tendon of the omohyoid muscle and anterior to the internal jugular vein; it receives lymphatic drainage from the submental, submandibular, and deep anterior cervical nodes; its efferent vessels go to other deep lateral cervical nodes. SYN: nodus lymphoideus juguloomohyoideus [TA] , juguloomohyoid node. juxtaesophageal lymph nodes [TA] several nodes located along either side of the esophagus; they receive lymph from both the esophagus and the lungs. SYN: nodi lymphoidei juxtaesophageales [TA] , nodi lymphoidei juxtaesophageales pulmonales. juxta-intestinal mesenteric lymph nodes [TA] the mesenteric lymph nodes located in immediate proximity to the jejunum or ileum. SYN: nodi lymphoidei juxtaintestinales [TA] . lateral axillary lymph nodes humeral axillary lymph nodes. lateral jugular lymph nodes deep nodes of the lateral cervical nodes lying lateral to the internal jugular vein; they usually empty into the jugular trunk. SYN: nodi lymphoidei jugulares laterales. lateral lacunar l. [TA] a l. of the external iliac group located lateral to the external iliac artery at the vascular space of the subinguinal compartment. SYN: nodus lymphoideus lacunaris lateralis [TA] , lateral lacunar node. lateral pericardial lymph nodes [TA] small lymph nodes located along the pericardiacophrenic vessels, they drain the pericardium. SYN: nodi lymphoidei pericardiales laterales [TA] . left colic lymph nodes [TA] small nodes along the left colic artery and its branches that drain the left flexure and upper part of the descending colon; efferent vessels pass to the inferior mesenteric nodes. SYN: nodi lymphoidei colici sinistri [TA] . left gastric lymph nodes [TA] nodes located along the left gastric artery and its branches; they are divided into paracardial, upper and lower groups. SYN: nodi lymphoidei gastrici sinistri [TA] , superior gastric lymph nodes. left gastroepiploic lymph nodes SYN: left gastroomental lymph nodes. left gastroomental lymph nodes [TA] nodes located in the greater omentum along the left gastroepiploic artery that drain part of the greater curvature of the stomach and greater omentum. SYN: nodi lymphoidei gastroomentales sinistri [TA] , left gastroepiploic lymph nodes. left lumbar lymph nodes [TA] the chain of lymph nodes associated with the aorta in the abdomen; it is divided into three groups: lateral aortic lymph nodes on the left of the aorta; pre-aortic lymph nodes in front of the aorta; post-aortic lymph nodes, behind the aorta. SYN: nodi lymphoidei lumbales sinistri [TA] , lumbar lymph nodes. l. of ligamentum arteriosum [TA] an inconstant l. of the anterior mediastinal group located adjacent to the ligamentum arteriosum. SYN: nodus lymphoideus ligamenti arteriosi [TA] , node of ligamentum arteriosum. lingual lymph nodes [TA] l. along the lingual vein receiving drainage from the tongue (except tip); drain to submandibular lymph nodes. SYN: nodi lymphoidei linguales [TA] . lymph nodes of lower limb [TA] the lymph nodes located in and draining the lower limb as a group; includes inguinal, popliteal, tibial, and fibular nodes. SYN: nodi lymphoidei membri inferioris [TA] . lumbar lymph nodes SYN: right lumbar lymph nodes, intermediate lumbar lymph nodes, left lumbar lymph nodes. malar l. [TA] one of the facial lymph nodes located near the zygomatic minor muscle. SYN: nodus lymphoideus malaris [TA] , malar node. mandibular l. [TA] one of the facial lymph nodes located by the facial artery near the point it crosses the mandible. SYN: nodus lymphoideus mandibularis [TA] , mandibular nodes. mastoid lymph nodes [TA] two or three nodes in the region of the mastoid process; they receive afferent lymphatic vessels from the scalp and auricle and send efferent vessels to the superior deep cervical nodes. SYN: nodi lymphoidei mastoidei [TA] , retroauricular lymph nodes. medial lacunar l. [TA] a l. of the external iliac group located medial to the external iliac vein at the vascular space of the subinguinal compartment. SYN: nodus lymphoideus lacunaris medialis [TA] , medial lacunar node. mesenteric lymph nodes [TA] nodes located in the mesentery; they are of three classes: ileocolic lymph nodes, juxtaintestinal mesenteric lymph nodes, and the central superior group of mesenteric lymph nodes. SYN: nodi lymphoidei mesenterici [TA] . mesocolic lymph nodes [TA] nodes located in the mesocolon; they are of two classes: paracolic lymph nodes, located in immediate proximity to the colon; colic lymph nodes located along the arteries supplying the colon. SYN: nodi lymphoidei mesocolici [TA] , nodi lymphoidei paracolici. middle colic lymph nodes [TA] nodes along the middle colic artery and its branches that drain the right colic flexure and most of the transverse colon. SYN: nodi lymphoidei colici medii [TA] . middle group of mesenteric lymph nodes SYN: central superior mesenteric lymph nodes. middle rectal l. a l. along the middle rectal artery that receives afferents from the pararectal nodes and sends efferents to the internal iliac nodes. SYN: middle rectal node, nodus lymphoideus rectalis medius. nasolabial l. [TA] one of the facial lymph nodes located near the junction of the superior labial and facial arteries. SYN: nodus lymphoideus nasolabialis [TA] , nasolabial node. obturator lymph nodes [TA] nodes of the internal iliac group located along the obturator artery. SYN: nodi lymphoidei obturatorii [TA] . occipital lymph nodes [TA] one or two small nodes along the occipital vessels close to the trapezius muscle that receive afferents from the posterior scalp and drain into the superior deep lateral cervical nodes; these are the most posterior nodes of the pericervical collar of lymph nodes of the head and neck, which receive the drainage from the head. SYN: nodi lymphoidei occipitales [TA] . pancreatic lymph nodes [TA] nodes draining the body and tail of the pancreas; they are subdivided into two groups: inferior pancreatic lymph nodes [TA] (nodi lymphoidei pancreatici inferiores [TA]), located along the inferior pancreatic artery; superior pancreatic lymph nodes [TA] (nodi lymphoidei pancreatici superiores [TA]), located along the splenic artery near the origin of its pancreatic branches. SYN: nodi lymphoidei pancreatici [TA] . pancreaticoduodenal lymph nodes [TA] nodes along the superior and inferior pancreaticoduodenal arteries. SYN: nodi lymphoidei pancreaticoduodenales [TA] . pancreaticosplenic lymph nodes lymph nodes of the pancreatic tail and spleen, receiving afferents from both organs plus the greater curvature of the stomach; they drain to the celiac lymph nodes. SYN: nodi lymphoidei pancreaticosplenales [TA] , nodi lymphoidei pancreaticolienales. paramammary lymph nodes [TA] several lymph nodes on the lateral side of the mammary gland that receive afferents from the mammary gland and send efferents to the axillary pectoral group of lymph nodes. The paramammary lymph nodes are commonly considered as part of the pectoral axillary nodes. SYN: nodi lymphoidei paramammarii [TA] . pararectal lymph nodes [TA] nodes located on either side of the rectum; they send efferents to the middle and superior rectal nodes. SYN: nodi lymphoidei pararectales [TA] , anorectal lymph nodes, nodi lymphoidei anorectales. parasternal lymph nodes [TA] a number of small nodes that lie along the course of the internal thoracic vessels; lymph enters these nodes from the anterior intercostal spaces, pericardium, diaphragm, liver and medial mammary gland; the efferent vessels pass upward to join the bronchomediastinal trunk of the same side. SYN: nodi lymphoidei parasternales [TA] . paratracheal l. [TA] nodes along the sides of the trachea in the neck and in the posterior mediastinum; receive drainage of superior (and inferior) tracheobranchial nodes, trachea, and esophagus; drain to bronchomediastinal lymphatic trunk(s), thoracic duct. SYN: nodi lymphoidei paratracheales [TA] , tracheal lymph nodes. parauterine lymph nodes [TA] nodes on either side of the uterus draining lymph to the internal iliac nodes and to the lumbar nodes via lymphatic vessels following the ovarian arteries. SYN: nodi lymphoidei parauterini [TA] . paravaginal lymph nodes [TA] lymph nodes in association with the vagina; they drain to the internal iliac nodes. SYN: nodi lymphoidei paravaginales [TA] . paravesical lymph nodes the lymph nodes located around the urinary bladder and, in the male, the prostate; there are three groups: prevesicular lymph nodes, in front of the bladder; lateral vesical lymph nodes, on the right and left sides; postvesicular lymph nodes behind the bladder. parietal lymph nodes [TA] the lymph nodes draining the walls of the abdomen or of the pelvis (as opposed to the visceral nodes draining the abdominopelvic viscera). SYN: nodi lymphoidei parietales [TA] , parietal nodes. pectoral axillary lymph nodes [TA] lymph nodes located along the lateral thoracic vein; they receive the drainage of the pectoral region, including most of the drainage of the breast. SYN: nodi lymphoidei axillares pectorales [TA] , anterior axillary lymph nodes&star, nodi lymphoidei axillares anteriores. pelvic lymph nodes [TA] the parietal and visceral lymph nodes of the pelvis, collectively. SYN: nodi lymphoidei pelvis [TA] . peroneal l. SYN: fibular l.. popliteal lymph nodes [TA] two groups of nodes located in the popliteal fossa: the superficial popliteal lymph nodes, located around the termination of the small saphenous vein, that drain the skin of the back of the leg and lateral side of the foot; and the deep popliteal lymph nodes, located around the popliteal vessels, that drain the superficial group, the deep structures of the leg, and the knee joint. SYN: nodi lymphoidei popliteales [TA] . posterior axillary lymph nodes subscapular axillary lymph nodes. posterior mediastinal lymph nodes SYN: prevertebral lymph nodes. posterior tibial l. [TA] a small inconstant l. located along the course of the posterior tibial artery. SYN: nodus lymphoideus tibialis posterior [TA] , posterior tibial node. preauricular deep parotid lymph nodes [TA] small lymph nodes located deep to the parotid fascia and in front of the ear. SYN: nodi lymphoidei parotidei profundi preauriculares [TA] . prececal lymph nodes [TA] nodes located in front of the cecum draining lymph to the ileocolic nodes. SYN: nodi lymphoidei precaecales [TA] . prelaryngeal lymph nodes [TA] lymph nodes of the deep anterior cervical group that lie in front of the larynx; they drain into the lateral deep lateral cervical nodes. SYN: nodi lymphoidei prelaryngeales [TA] . prepericardial lymph nodes [TA] several small lymph nodes located between the pericardium and the sternum, in the anterior mediastinum. SYN: nodi lymphoidei prepericardiaci [TA] . pretracheal lymph nodes [TA] lymph nodes of the deep anterior cervical group that lie in front of the trachea; they drain into the deep lateral cervical group or into the parasternal nodes. SYN: nodi lymphoidei pretracheales [TA] . prevertebral lymph nodes [TA] nodes located along the thoracic aorta; they receive vessels from the esophagus, diaphragm, liver, and pericardium and send efferents to the thoracic duct and bronchomediastinal lymphatic trunk(s). SYN: nodi lymphoidei prevertebrales&star, nodi lymphoidei mediastinales posteriores, posterior mediastinal lymph nodes. proximal deep inguinal l. [TA] one of the deep inguinal lymph nodes located in or adjacent to the femoral canal; sometimes mistaken for a femoral hernia when enlarged. SYN: nodus lymphoideus proximalis profundus [TA] , node of Cloquet, Rosenmüller gland, Rosenmüller node. pulmonary lymph nodes SYN: intrapulmonary lymph nodes. pyloric lymph nodes [TA] group of lymph nodes surrounding the pylorus, draining lymph into the right gastric or the right gastro-omental lymph nodes; it is divided into three smaller groups: suprapyloric nodes, superior to the pylorus; subpyloric nodes, inferior to the pylorus; and retropyloric nodes, posterior to the pylorus. SYN: gastroduodenal lymph nodes, nodi lymphoidei pylorici. retroauricular lymph nodes SYN: mastoid lymph nodes. retrocecal lymph nodes [TA] nodes located behind the cecum draining lymph into the ileocolic nodes. SYN: nodi lymphoidei retrocecales [TA] . retropharyngeal lymph nodes [TA] the three groups of lymph nodes, one median and two lateral, located between the pharynx and the prevertebral layer of cervical fascia; they receive lymph from the nasopharynx, the auditory tube, and the atlanto-occipital and atlantoaxial joints. SYN: nodi lymphoidei retropharyngeales [TA] . retropyloric lymph nodes [TA] a group of lymph nodes located behind the pylorus. SYN: nodi lymphoidei retropylorici [TA] , retropyloric nodes. right colic lymph nodes [TA] nodes located along the right colic artery that drain the upper part of the ascending colon. SYN: nodi lymphoidei colici dextri [TA] . right gastric lymph nodes [TA] small nodes along the course of the right gastric artery that drain part of the lesser curvature of the stomach. SYN: nodi lymphoidei gastrici dextri [TA] . right gastroepiploic lymph nodes SYN: right gastroomental lymph nodes. right gastroomental lymph nodes [TA] nodes located in the greater omentum along the right gastroepiploic artery that drain part of the greater curvature of the stomach and the greater omentum. SYN: nodi lymphoidei gastroomentales dextri [TA] , right gastroepiploic lymph nodes. right lumbar lymph nodes [TA] the chain of nodes associated with the inferior vena cava; it is divided into three groups: lateral caval nodes, on the right of the inferior vena cava; precaval nodes, anterior to the inferior vena cava; postcaval nodes, posterior to the inferior vena cava. SYN: nodi lymphoidei lumbales dextri [TA] , lumbar lymph nodes. sacral lymph nodes [TA] nodes in the concavity of the sacrum that drain the rectum and posterior pelvic wall. SYN: nodi lymphoidei sacrales [TA] . sentinel l. the first l. to receive lymphatic drainage from a malignant tumor; the sentinel node is identified as the first to take up a radionuclide or dye injected into the tumor; increasingly used in operations for melanoma and breast cancer; if the sentinel node is free of metastasis, more distal nodes are also free. SEE ALSO: signal l.. SYN: sentinel node. sigmoid lymph nodes [TA] nodes of the inferior mesenteric group, located along the sigmoid arteries. SYN: nodi lymphoidei sigmoidei [TA] . signal l. a firm supraclavicular l., especially on the left side, sufficiently enlarged that it is palpable from the cutaneous surface; such a l. is so termed because it may be the first recognized presumptive evidence of a malignant neoplasm in one of the viscera. A signal l. that is known to contain a metastasis from a malignant neoplasm is sometimes designated by an old eponym, Troisier ganglion. SEE ALSO: sentinel l.. SYN: jugular gland, Virchow node. splenic lymph nodes [TA] nodes near the hilum of the spleen; they receive afferents from the spleen and stomach, and send efferents to the pancreatic-postsplenic and celiac nodes. SYN: nodi lymphoidei splenici [TA] , nodi lymphoidei lienales&star. subaortic lymph nodes [TA] nodes of the common iliac group located at the bifurcation of the aorta. SYN: nodi lymphoidei subaortici [TA] . submandibular lymph nodes [TA] four or five nodes that lie in relationship to the mandible and the submandibular gland; they receive vessels from the face below the eye and from the tongue and drain into the superior deep cervical nodes, particularly the jugulodigastric node; these nodes are part of the pericervical collar of lymph nodes that initially receive drainage from the head. SYN: nodi lymphoidei submandibulares [TA] . submental lymph nodes [TA] small nodes that lie superficial to the mylohyoid muscle; they receive afferents from the lower lip, chin, and the tip of the tongue, and send efferents to the deep lateral cervical nodes; these nodes are part of the pericervical collar of lymph nodes that initially receives drainage from the head. SYN: nodi lymphoidei submentales [TA] . subpyloric lymph nodes [TA] a group of pyloric nodes located below the pylorus. SYN: nodi lymphoidei subpylorici [TA] , subpyloric node. subscapular axillary lymph nodes [TA] nodes of the axillary region located along the subscapular vein and its tributaries; they receive afferent vessels from the dorsal surface of the thorax and scapular region and send efferent vessels to the central group of lymph nodes. SYN: nodi lymphoidei axillares subscapulares [TA] , nodi lymphoidei axillares posteriores&star, posterior axillary lymph nodes&star. superficial inguinal lymph nodes [TA] a group of 12–20 nodes that lie in the subcutaneous tissue below the inguinal ligament and along the terminal part of the great saphenous vein; they drain the skin and subcutaneous tissue of the lower abdominal wall, perineum, buttock, external genitalia, and lower limb; they are subdivided into three groups: inferior (vertical) group of superficial inguinal lymph nodes, located inferior to the saphenous opening, receiving drainage of the lower limb; superolateral (lateral horizontal) superficial inguinal lymph nodes located lateral to the saphenous opening, receiving drainage of lateral buttock and lower anterior abdominal wall; and superomedial (medial horizontal) superficial inguinal lymph nodes, located medial to the saphenous opening, receiving drainage of the perineum and external genitalia. SYN: nodi lymphoidei inguinales superficiales [TA] . superficial lateral cervical lymph nodes [TA] 1–4 nodes lying along the external jugular vein; they drain the skin and superficial structures over the region of the sternocleidomastoid muscle and send efferent vessels to the deep lateral cervical lymph nodes. SYN: nodi lymphoidei cervicales laterales superficiales [TA] . superficial parotid lymph nodes [TA] several small lymph nodes located in the subcutaneous tissue in the parotid region. SYN: nodi lymphoidei parotidei superficiales [TA] . superior gastric lymph nodes SYN: left gastric lymph nodes. superior mesenteric lymph nodes [TA] the numerous nodes located in the mesentery along the superior mesenteric artery; they receive lymph from the central mesenteric lymph nodes and drain into the intestinal lymph trunk. SYN: nodi lymphoidei mesenterici superiores [TA] , nodi lymphoidei centrales. superior phrenic lymph nodes [TA] three groups of small nodes, anterior, middle, and posterior, on the upper surface of the diaphragm; they receive afferents from the liver, diaphragm, and intercostal spaces and send efferents to parasternal and posterior mediastinal nodes. SYN: nodi lymphoidei phrenici superiores [TA] . superior rectal lymph nodes [TA] nodes of the inferior mesenteric group, located along the superior rectal artery. SYN: nodi lymphoidei rectales superiores [TA] . superior tracheobronchial lymph nodes [TA] several large lymph nodes of the posterior mediastinum located superior to the bronchi at their union with the trachea; receives lymph from inferior tracheobronchial lymph nodes and bronchopulmonary nodes; drain to paratracheal nodes. SYN: nodi lymphoidei tracheobronchiales superiores [TA] . supraclavicular lymph nodes [TA] the portion of the inferior deep lateral cervical nodes located between the inferior belly of the omohyoid muscle and the clavicle; afferent vessels come from adjacent regions including the mediastinum; efferent vessels terminate in the subclavian trunk. SYN: nodi lymphoidei supraclaviculares [TA] . suprapyloric l. [TA] a l. located above the pylorus. SYN: nodus lymphoideus suprapyloricus [TA] , suprapyloric node. thoracic lymph nodes [TA] the parietal and visceral lymph nodes of the thorax, collectively. SYN: nodi lymphoidei thoracis [TA] . thyroid lymph nodes [TA] nodes of the deep anterior cervical group located around the thyroid gland; they drain into the deep lateral cervical group. SYN: nodi lymphoidei thyroidei [TA] . tracheal lymph nodes SYN: paratracheal l.. lymph nodes of upper limb [TA] lymph nodes located in and draining the upper limb, ultimately drained by the subclavian lymphatic trunk; included are the axillary, interpectoral, deltopectoral (infraclavicular), brachial, and cubital nodes. SYN: nodi lymphoidei membri superioris [TA] . visceral lymph nodes [TA] the lymph nodes draining the viscera of the abdomen or of the pelvis as opposed to the parietal nodes draining the body walls. SYN: nodi lymphoidei viscerales [TA] , visceral nodes. visceral lymph nodes of abdomen [TA] the numerous lymph nodes receiving lymph from abdominal organs located in association with the visceral branches of the aorta. SYN: nodi lymphoidei abdominis viscerales [TA] , lymph nodes of abdominal organs.

lympho-, lymph-
Lymph. [L. lympha, spring water]

lymphoblast (lim′fo-blast)
A young immature cell that matures into a lymphocyte and is characterized by more abundant cytoplasm than in a lymphocyte, a nucleus in which the chromatin is finer than in a lymphocyte (but coarser than in a myeloblast), and one or two rather prominent nucleoli. SYN: lymphocytoblast. [lympho- + G. blastos, germ]

lymphoblastic (lim-fo-blas′tik)
Pertaining to the production of lymphocytes.




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