| yolk sac carcinoma | Malignant germ cell tumour commonly found in the ovary. The tumour arises from primitive germ cells and develops into extra-embryonic tissue resembling the yolk sac. Synonym: yolk sac carcinoma. (05 Mar 2000) |
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| fibrolamellar liver cell carcinoma | <tumour> Primary hepatic carcinoma in which malignant hepatocytes are intersected by fibrous lamellated bands. Synonym: oncocytic hepatocellular tumour. (05 Mar 2000) |
| large cell carcinoma | A group of lung cancers in which the cells are large and look abnormal. (12 Dec 1998) |
| latent carcinoma | <tumour> An epithelial neoplasm showing microscopic features of malignancy believed to have remained localised and asymptomatic for a long period; e.g., small carcinoma's of the prostate in old men, often found incidentally at autopsy. (05 Mar 2000) |
| leptomeningeal carcinoma | <tumour> An infiltration of carcinoma cells in the arachnoid and subarachnoid space; may be primary or secondary. Synonym: leptomeningeal carcinoma, leptomeningeal carcinomatosis, meningeal carcinomatosis. (05 Mar 2000) |
| liver cell carcinoma | <tumour> A carcinoma derived from parenchymal cells of the liver. Synonym: hepatocarcinoma, hepatocellular carcinoma, liver cell carcinoma. (05 Mar 2000) |
| lobular carcinoma | <tumour> A form of adenocarcinoma, especially of the breast, where lobular carcinoma is less common than ductal carcinoma and usually is composed of small cells. (05 Mar 2000) |
| lobular carcinoma in situ | <tumour> Carcinoma of the breast in which small tumour cells fill preexisting acini within lobules, without invading the surrounding stroma. Synonym: lobular carcinoma in situ, lobular neoplasia. (05 Mar 2000) |
| Lucke carcinoma | <cell biology, oncology> A renal carcinoma, caused by a herpes virus, in frogs, it aroused interest because its abnormal growth appears to be dependent on a restricted temperature range. Nuclei from these cells give rise to normal frogs if transplanted into enucleated eggs, giving support to the epigenetic theories of neoplasia. (18 Nov 1997) |
| Amberg's lateral sinus line | A line dividing the angle formed by the anterior edge of the mastoid process and the temporal line. (05 Mar 2000) |
| amyotrophic lateral sclerosis | A serious neurologic disease that results from the progressive degeneration of the motor neurons. (27 Sep 1997) |
| amyotropic lateral sclerosis | A chronic progressive disease of motor neurons (the nerves that come from the spinal cord to supply electrical energy to the muscles). (12 Dec 1998) |
| anterior lateral malleolar artery | <anatomy, artery> Origin, anterior tibial; distribution, ankle joint; anastomoses, peroneal, lateral tarsal. Synonym: arteria malleolaris anterior lateralis. (05 Mar 2000) |
| bulb of lateral ventricle | A rounded elevation in the dorsal part of the medial wall of the posterior horn of the lateral ventricle, produced by the major forceps. (05 Mar 2000) |
| bulb of posterior horn of lateral ventricle of brain | Bulb of posterior horn of lateral ventricle of the brain; a curved elevation on the inner wall of the posterior horn produced by the fibres of the forceps major of the corpus callosum as they bend backward into the occipital lobe. Synonym: bulb of posterior horn of lateral ventricle of brain. (05 Mar 2000) |