| renal agenesis | <radiology> Associated with, duplicated vagina and/or uterus (mullerian duct anomaly), seminal vesicle cysts (12 Dec 1998) |
|---|---|
| agenesis | <embryology> A condition in which a part of the body (such as an organ or a tissue) does not completely develop or fails to develop at all. (09 Oct 1997) |
| agenesis of corpus callosum | <radiology> Defect in dorsal portion of lamina reuniens, occurs about 10th - 12th week of gestation, may be complete or partial CT findings: parallel lateral ventricles, occipital horns dilated, deep falx, frontal horns C-shaped on coronal view associated with, Dandy-Walker cyst, encephalocele, Arnold-Chiari malformation, CNS lipoma (12 Dec 1998) |
| gonadal agenesis | Congenital absence of essentially all gonadal tissue; the external genitalia and genital ducts are female, but if interstitial cells of Leydig are present, the external genitalia are commonly ambiguous and the genital ducts are female. See: gonadal dysgenesis. Compare: Klinefelter's syndrome, Turner's syndrome. Synonym: gonadal agenesis. (05 Mar 2000) |
| sacral agenesis | <radiology> Agenesis or hypoplasia of sacrum, part of caudal-regression syndrome, associated with maternal diabetes, with or without inherited, possible features: absent lower extremities, bladder/bowel impairment (12 Dec 1998) |
| thymic agenesis | The absence of the thymus, which may be associated with parathyroid agenesis in DiGeorge syndrome. (05 Mar 2000) |
| unilateral | <anatomy> Affecting only one side. Origin: L. Latus = side (18 Nov 1997) |
| unilateral anaesthesia | <neurology> The inability to feel touches (tactile sensations) on one side of the body. (09 Oct 1997) |
| unilateral hemianopia | Uniocular hemianopia, loss of sight in one-half of the visual field of one eye only. (05 Mar 2000) |
| unilateral hermaphroditism | Hermaphroditism in which the doubling of sex characteristics occurs on one side only: ovotestis on one side and either ovary or testis on the other. (05 Mar 2000) |
| unilateral hyperlucent lung | Chronic bronchiolitis obliterans predominating on one side. See: unilateral lobar emphysema. (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 lobar emphysema | A state in which the roentgenographic density of one lung (or one lobe) is markedly less than the density of the other(s) because of the presence of air trapped during expiration. Synonym: Macleod's syndrome, Swyer-James syndrome. (05 Mar 2000) |
| unilateral rib notching | <radiology> Aortic coarctation, proximal to left subclavian artery most likely to be right, anomalous right subclavian artery most likely to be left, subclavian artery stenosis / atresia, most likely to be IPSIlateral, Blalock-Taussig shunt, anastamosis of subclavian artery to pulmonary artery, for Tetralogy of Fallot, most likely to be IPSIlateral (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) |