| kidney stone | <nephrology, urology> The presence of calculi in the kidney or collecting system. The calculi are usually small (2-12mm) solid, crystalline, concretions that develop in the kidney and eventually pass through the genitourinary tract. Stones may be composed of calcium, phosphate or uric acid. (27 Sep 1997) |
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| kidney transplantation | The transference of a kidney from one human or animal to another. (12 Dec 1998) |
| kidney tubular necrosis, acute | Acute kidney failure resulting from destruction of tubular epithelial cells. It is commonly attributed to exposure to toxic agents or renal ischemia following severe trauma. (12 Dec 1998) |
| kidney tubules, collecting | Straight tubes commencing in the radiate part of the kidney cortex where they receive the curved ends of the distal convoluted tubules. In the medulla the collecting tubules of each pyramid converge to join a central tube (duct of bellini) which opens on the summit of the papilla. (12 Dec 1998) |
| kidney tumour | <oncology> A benign or cancerous growth originating from kidney tissue (for example renal cell carcinoma, hypernephroma). (27 Sep 1997) |
| kidney: urographic patterns | <radiology> Unilateral Bilateral Small kidney(s) Smooth *** *** Scarred *** Large kidney(s) Smooth *** Unifocal *** Multifocal *** *** (12 Dec 1998) |
| fatty kidney | A kidney in which there is fatty metamorphosis of the parenchymal cells, especially fatty degeneration. (05 Mar 2000) |
| unilateral large kidney | <radiology> Multifocal: xanthogranulomatous pyelonephritis (XGP), malakoplakia, multicystic dysplastic kidney Cf: other urographic patterns smooth kidney: renal vein thrombosis, acute arterial infarction, obstructive uropathy, acute bacterial nephritis, compensatory hypertrophy, duplicated pelvocalyceal system Cf: other urographic patterns multifocal: solid neoplastic mass, malignant, adenocarcinoma, adult nephroblastoma, invasive transitional cell carcinoma, sarcoma, metastasis, benign, hamartoma, adenoma, mesenchymal tumour cystic mass, simple cyst, focal hydronephrosis, multilocular cystic nephroma, arteriovenous malformation Cf: other urographic patterns (12 Dec 1998) |
| unilateral small kidney | <radiology> Scarred: reflux nephropathy, lobar infarction Cf: other urographic patterns smooth kidney: ischemia due to focal arterial disease, chronic infarction, radiation nephritis, congenital hypoplasia, post-obstructive atrophy, post-inflammatory atrophy, reflux atrophy Cf: other urographic patterns (12 Dec 1998) |
| fibrous capsule of kidney | A fibrous membrane ensheathing the kidney. Synonym: capsula fibrosa renis, tunica fibrosa renis. (05 Mar 2000) |
| flea-bitten kidney | The kidney seen at autopsy in some cases of bacterial endocarditis, the appearance being caused by diffuse petechial haemorrhages resulting from focal glomerulonephritis. (05 Mar 2000) |
| floating kidney | The abnormally mobile kidney in nephroptosia. Synonym: movable kidney, wandering kidney. (05 Mar 2000) |
| Formad's kidney | <nephrology> An enlarged and deformed kidney sometimes seen in chronic alcoholism. (05 Mar 2000) |
| lateral border of kidney | The convex narrow edge separating the anterior and posterior surfaces. Synonym: margo lateralis renis. (05 Mar 2000) |
| fused kidney | A single, anomalous organ produced by fusion of the renal anlagen. (05 Mar 2000) |