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Medical Dictionary - Dictionary of Medicine and Human Biology


Medical Dictionary


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


pyelitis (pi-e-li′tis)
Inflammation of the renal pelvis. [pyel- + G. -itis, inflammation]

pyelo-, pyel-
Pelvis, usually the renal pelvis. [G. pyelos, trough, tub, vat]

pyelocaliceal (pi′e-lo-kal′i-se′al)
Relating to the renal pelvis and calices. SYN: pyelocalyceal.

pyelocaliectasis (pi′e-lo-kal′e-ek′ta-sis)
SYN: caliectasis.

pyelocalyceal (pi′e-lo-kal′i-se′al)
SYN: pyelocaliceal.

pyelocystitis (pi-e-lo-sis-ti′tis)
Inflammation of the renal pelvis and the bladder. [pyelo- + G. kystis, bladder, + -itis, inflammation]

pyelofluoroscopy (pi′e-lo-flor-os′ko-pe)
Fluoroscopic examination of the renal pelves and ureters, following administration of contrast medium. [pyelo- + L. fluo, to flow, + G. skopeo, to view]

pyelogram (pi′el-o-gram)
A radiograph or series of radiographs of the renal pelvis and ureter, following injection of contrast medium.

pyelography (pi′e-log′ra-fe)
Radiologic study of the kidney, ureters, and usually the bladder, performed with the aid of a contrast agent injected either intravenously, or directly through a ureteral or nephrostomy catheter, or percutaneously. SYN: pelviureterography, pyeloureterography, ureteropyelography. [pyelo- + G. grapho, to write] antegrade p. antegrade urography in which the contrast medium is injected into the renal calices or pelvis. intravenous p. (IVP) former name for intravenous urography. retrograde p. p. in which contrast material is injected into the ureters from an endoscope in the bladder.

pyelolithotomy (pi′e-lo-li-thot′o-me)
Operative removal of a calculus from the kidney through an incision in the renal pelvis. SYN: pelvilithotomy, pelviolithotomy. [pyelo- + G. lithos, stone, + tome, incision]

pyelolymphatic (pi′e-lo-lim-fat′ik)
Pertaining to the lymphatics of the renal pelvis.

pyelonephritis (pi′e-lo-ne-fri′tis)
Inflammation of the renal parenchyma, calices, and pelvis, particularly due to local bacterial infection. [pyelo- + G. nephros, kidney, + -itis, inflammation] acute p. acute inflammation of the renal parenchyma and pelvis characterized by small cortical abscesses and yellowish streaks in the medulla due to pus in the collecting tubules and interstitial tissue. ascending p. p. due to bacterial infection from the lower urinary tract, particularly by reflux of infected urine. chronic p. chronic inflammation of the renal parenchyma and pelvis resulting from bacterial infection, characterized by calyceal deformities and overlying large flat renal scars with patchy distribution. xanthogranulomatous p. a chronic inflammatory condition diffusely involving the entire kidney and usually resulting in a grossly enlarged and functionless kidney that can grossly resemble a neoplasm or tuberculosis; histologically, it is characterized by an inflammatory reaction with numerous lipid-laden, foamy histiocytes mixed with lymphocytes and plasma cells to form multiple granulomas.

pyelonephrosis (pi′e-lo-ne-fro′sis)
Obsolete term for any disease of the pelvis of the kidney. [pyelo- + G. nephros, kidney, + -osis, condition]

pyeloplasty (pi′e-lo-plas-te)
Surgical reconstruction of the renal pelvis and ureter to correct an obstruction at the ureteropelvic junction. SYN: pelvioplasty. [pyelo- + G. plastos, formed] capsular flap p. a reconstructive procedure for correction of uteropelvic obstruction, whereby a flap of renal capsule is swung down from the renal hilus to enlarge an obstructed intrarenal pelvis and upper ureter; used to correct situations involving loss of renal pelvic tissue that preclude the use of renal pelvis for the reconstruction. Culp p. a reconstructive technique for correction of uteropelvic obstruction, whereby a spiral flap of renal pelvis is brought down and interposed into a vertical incision in the ureter. SEE ALSO: Scardino vertical flap p.. disjoined p., dismembered p. a reconstructive procedure for correction of ureteropelvic obstruction, whereby the obstructed segment is resected and the upper ureter reanastomosed into the lower renal pelvis, usually utilizing a modified elliptical anastomotic technique. Foley Y-plasty p. a reconstructive procedure for correction of ureteropelvic obstruction, whereby a V-shaped flap of renal pelvis is advanced downward into a vertical incision in the upper ureter, thereby widening the ureteropelvic junction. Scardino vertical flap p. a reconstructive technique for correction of uteropelvic obstruction, whereby a vertical flap of renal pelvis is brought down and interposed into a vertical incision in the ureter. Cf.:Culp p..

pyeloplication (pi′e-lo-pli-ka′shun)
An obsolete procedure of taking tucks in the wall of the renal pelvis when unduly dilated by a hydronephrosis. [pyelo- + L. plico, to fold]

pyeloscopy (pi-e-los′ko-pe)
Endoscopic or fluoroscopic observation of the pelvis and calices of the kidney. [pyelo- + G. skopeo, to view]

pyelostomy (pi-e-los′to-me)
Formation of an opening into the kidney pelvis to establish urinary drainage. [pyelo- + G. stoma, mouth]

pyelotomy (pi-e-lot′o-me)
Incision into the pelvis of the kidney. [pyelo- + G. tome, incision] extended p. extension of a standard p. into the lower pole infundibulum through the avascular plane between the posterior and basilar segmental renal arteries. SYN: Gil-Vernet operation.

pyeloureterectasis (pi′e-lo-u-re′ter-ek′ta-sis)
SYN: hydronephrosis. [pyelo- + ureter + G. ektasis, a stretching]

pyeloureterography (pi′e-lo-u-re′ter-og′ra-fe)
SYN: pyelography.

pyelovenous (pi′e-lo-ve′nus)
Denoting the phenomenon of drainage from the renal pelvis into the renal veins from increased intrapelvic pressure. [pyelo- + venous]

pyemesis (pi-em′e-sis)
The vomiting of pus. [G. pyon, pus, + emesis, vomiting]

pyemia (pi-e′me-a)
Septicemia due to pyogenic organisms causing multiple abscesses. SYN: pyogenic fever. [G. pyon, pus, + haima, blood] cryptogenic p. p. whose source is not evident. portal p. suppurative pylephlebitis.

pyemic (pi-e′mik)
Relating to or suffering from pyemia.

Pyemotes tritici (pi-e-mo′tez tri-ti′ki, -se)
The straw or grain itch mite, a common parasite of insects in stored grain and a frequent cause of straw or grain itch from their bites; not to be confused with P. ventricosus, often called the straw itch mite, which is associated with the furniture beetle Anobium punctatum and is harmless to humans. SYN: Pediculoides ventricosus.

pyencephalus (pi-en-sef′a-lus)
SYN: pyocephalus. [G. pyon, pus, + enkephalos, brain]

pyesis (pi-e′sis)
SYN: suppuration. [G. pyon, pus, + -esis, condition or process]

pyg-
See pygo-.

pygal (pi′gal)
Relating to the buttocks. [G. pyge, buttocks]

pygalgia (pi-gal′je-a)
Rarely used term meaning pain in the buttocks. [pyg- + G. algos, pain]

pygmalionism (pig-mal′yon-izm)
Rarely used term for the state of being in love with an object of one's own creation. [Pygmalion, G. myth. char.]

pygmy (pig′me) [MIM*265850]
A physiologic dwarf with normal serum levels of growth hormone and somatomedin and refractoriness to exogenous hormone; especially one of a race of similar people, such as the pygmies of central Africa. SYN: pigmy. [G. pygmaios, dwarfish, fr. pygme, fist, also a measure of length from elbow to knuckles]

pygo-, pyg-
The buttocks. [G. pyge]

pygoamorphus (pi′go-a-mor′fus)
Conjoined twins in which the parasite, attached to the buttocks of the autosite, is reduced to a formless mass or embryoma. See conjoined twins, under twin. [pygo- + G. a- priv. + morphe, form]

pygodidymus (pi-go-did′i-mus)
Conjoined twins with a single cephalothoracic region but with the buttocks and parts below doubled. See conjoined twins, under twin. SEE ALSO: duplicitas posterior. [pygo- + G. didymos, twin]

pygomelus (pi-gom′e-lus)
Unequal conjoined twins in which the parasite is represented by a fleshy mass, or by a more fully developed limb, attached to the sacral or coccygeal region of the autosite. See conjoined twins, under twin. [pygo- + G. melos, part]

pygopagus (pi-gop′a-gus)
Conjoined twins in which the two individuals are joined at the buttocks, most often back to back. See conjoined twins, under twin. [pygo- + G. pagos, something fixed]

pyk-
See pykno-.

pyknic (pik′nik)
Denoting a constitutional body type characterized by well-rounded external contours and ample body cavities; virtually synonymous with endomorphic. [G. pyknos, thick]

pykno-, pyk-
Thick, dense, compact. [G. pyknos]

pyknodysostosis (pik′no-dis-os-to′sis)
A condition characterized by short stature, delayed closure of the fontanels, and hypoplasia of the terminal phalanges. Autosomal recessive inheritance. SYN: osteopetrosis acro-osteolytica. [pykno- + G. dys-, difficult, + osteon, bone, + -osis, condition]

pyknoepilepsy, pyknolepsy (pik′no-ep-i-lep-se, pik′no-lep-se)
Obsolete terms for absence. [pykno- + G. lepsis, seizure]

pyknolepsy
SYN: childhood absence epilepsy.

pyknomorphous (pik′no-mor′fus)
Denoting a cell or tissue that stains deeply because the stainable material is closely packed. [pykno- + G. morphe, form, shape]

pyknophrasia (pik′no-fra′ze-a)
Thickness of speech. [pykno- + G. phrasis, speech]

pyknosis (pik-no′sis)
A thickening or condensation; specifically, a condensation and reduction in size of the cell or its nucleus, usually associated with hyperchromatosis; nuclear p. is a stage of necrosis. [pykno- + G. -osis, condition]

pyknotic (pik-not′ik)
Relating to or characterized by pyknosis.

pyla (pi′la)
The orifice of communication between the third ventricle and cerebral aqueduct (of Sylvius). [G. pyle, gate]

pylar (pi′lar)
Relating to the pyla.

pylephlebitis (pi′le-fle-bi′tis)
Inflammation of the portal vein or any of its branches. [G. pyle, a gate, + phleps, vein, + -itis, inflammation]

pylethrombophlebitis (pi-le-throm′bo-phle-bi′tis)
Inflammation of the portal vein with the formation of a thrombus. [G. pyle, gate, + thrombos, a clot, + phleps, vein, + -itis, inflammation]

pylethrombosis (pi′le-throm-bo′sis)
Thrombosis of the portal vein or its branches. [G. pyle, gate, + thrombos, a clot, + -osis, condition]

pylic (pi′lik)
Relating to the portal vein.

pylon (pi′lon)
A simple prosthesis, usually without joints, for a lower limb amputation. [G. gateway]

pylor-
See pyloro-.

pyloralgia (pi-lo-ral′je-a)
Rarely used term for pain in the pyloric region of the stomach. [pylor- + G. algos, pain]

pylorectomy (pi′lor-ek′to-me)
Excision of the pylorus. [pylor- + G. ektome, excision]

pylori (pi-lor′i)
Plural of pylorus. [L.]

pyloric (pi-lor′ik)
Relating to the pylorus.

pyloristenosis (pi-lor′i-ste-no′sis)
Stricture or narrowing of the orifice of the pylorus. SYN: pylorostenosis. [pylor- + G. stenosis, a narrowing]

pyloritis (pi-lo-ri′tis)
Inflammation of the pyloric end of the stomach. [pylor- + G. -itis, inflammation]

pyloro-, pylor-
The pylorus. [G. pyloros, gatekeeper]

pyloroduodenitis (pi-lor′o-doo′od-e-ni′tis)
Inflammation involving the pyloric outlet of the stomach and the duodenum. [pyloro- + duodenitis]

pylorogastrectomy (pi-lor′o-gas-trek′to-me)
Resection of the pylorus and a portion of the distal stomach.

pyloromyotomy (pi-lor′o-mi-ot′o-me)
Longitudinal incision through the anterior wall of the pyloric canal to the level of the submucosa, to treat hypertrophic pyloric stenosis. SYN: Fredet-Ramstedt operation, Ramstedt operation. [pyloro- + G. mys, muscle, + tome, incision]

pyloroplasty (pi-lor′o-plas-te)
Widening of the pyloric canal and any adjacent duodenal stricture by means of a longitudinal incision closed transversely. [pyloro- + G. plastos, formed] Finney p. a long, full-thickness incision from the duodenum, through the pylorus and proximally into the gastric antrum, with a C-shaped closure to provide a wider opening between stomach and duodenum. Heineke-Mikulicz p. p. in which a short (2–3 inch), longitudinal incision is made through the pylorus and closed transversely. Jaboulay p. a side-to-side gastroduodenostomy, useful when the pylorus and proximal duodenum are extensively scarred or indurated by peptic ulcer disease.

pyloroptosis, pyloroptosia (pi-lor-o-to′sis, -to′se-a)
Downward displacement of the pyloric end of the stomach. [pyloro- + G. ptosis, a falling]

pylorospasm (pi-lor′o-spazm)
Spasmodic contraction of the pylorus.

pylorostenosis (pi-lor′o-ste-no′sis)
SYN: pyloristenosis.

pylorostomy (pi-lo-ros′to-me)
Establishment of a fistula from the abdominal surface into the stomach near the pylorus. [pyloro- + G. stoma, mouth]




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