| OA | obstructive apnea; occipital artery; occipito-anterior; occiput anterior; octanoic acid; ocular albi... |
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| OAK | Kjer optic atrophy |
| OCA | oculocutaneous albinism; olivopontocerebellar atrophy; oral contraceptive agent |
| OPCA | olivopontocerebellar atrophy |
| PMA | index of prevalence and severity of gingivitis, where P = papillary gingiva, M = marginal gingiva, a... |
| posterior part of the diaphragmatic surface of the liver | That portion of the diaphragmatic surface of the liver that includes the bare area and the caudate lobe. Synonym: pars posterior faciei diaphragmatis hepatis. (05 Mar 2000) |
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| halibut liver oil | <marine biology> The fixed oil obtained from the fresh or suitably preserved livers of halibut species of the genus Hippoglossus (family Pleuronectidae); a supplementary source of vitamins A and D. (05 Mar 2000) |
| cystic liver metastases | <radiology> Mucinous ovarian carcinoma, colonic carcinoma, sarcoma, melanoma, lung carcinoma, carcinoid tumour see: liver metastases (12 Dec 1998) |
| hobnail liver | In Laennec's cirrhosis, the contraction of scar tissue and hepatic cellular regeneration which causes a nodular appearance of the liver's surface. (05 Mar 2000) |
| segments of liver | Territories of the liver with independent portobilioarterial distribution or independent venous drainage. The naming of segments in the NA is based upon the portobilioarterial distribution. See: anterior segment, lateral segment, medial segment, posterior segment. Synonym: segmenta hepatis, segments of liver. (05 Mar 2000) |
| hot liver lesion | <radiology> Vena cava (superior vena cava/IVC) obstruction, QUADRATE (anterior medial segment of left lobe), basilic vein injection most likely to be collaterals, Budd-Chiari syndrome, CAUDATE lobe, cirrhosis, focal nodular hyperplasia (FNH), haemangioma see also: liver-spleen scan (12 Dec 1998) |
| serosa of liver | Serous coat of the liver; peritoneal covering of the liver, enclosing almost all except for a triangular area on its posterior surface, (the "bare area of the liver") and a smaller area where the liver and gallbladder are in direct contact. Synonym: tunica serosa hepatis. (05 Mar 2000) |
| shark liver oil | Oil extracted from the livers of sharks, mainly of the species Hypoprion brevirostris; a rich source of vitamins A and D. (05 Mar 2000) |
| hypervascular liver metastases | <radiology> Renal cell carcinoma, carcinoid tumour, colonic carcinoma, choriocarcinoma, breast carcinoma, melanoma, pancreatic islet cell tumour, ovarian cystadenocarcinoma, sarcomas, pheochromocytoma see: liver metastatses (12 Dec 1998) |
| solitary echogenic liver mass | <radiology> Haemangioma, focal fatty infiltration, hepatoma, adenoma, focal nodular hyperplasia, hepatic lipoma (12 Dec 1998) |
| stellate cells of liver | Large star-shaped or pyramidal cells with a large oval nucleus and a small prominent nucleolus. These intensely phagocytic cells line the walls of the sinusoids of the liver and form a part of the reticuloendothelial system. (12 Dec 1998) |
| nodular transformation of the liver | A rare condition in which nodules of hyperplastic hepatocytes develop without fibrosis or general loss of lobular architecture. Synonym: nodular regenerative hyperplasia. (05 Mar 2000) |
| sugar-icing liver | Hyaloserositis of the liver. Synonym: Curschmann's disease, icing liver, sugar-icing liver, zuckergussleber. (05 Mar 2000) |
| notch for round ligament of liver | The notch in the inferior border of the liver that accommodates the round ligament. Synonym: incisura ligamenti teretis hepatis, incisura umbilicalis, umbilical notch. (05 Mar 2000) |
| nutmeg liver | Chronic passive congestion of the liver, causing accentuation of the lobular pattern with red central and yellow or tan periportal zones. (05 Mar 2000) |