| 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) |
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| lateral aberrant thyroid carcinoma | <tumour> A cervical nodule of thyroid carcinoma situated outside the thyroid gland, formerly thought to arise from ectopic thyroid tissue but now believed to be metastatic from an occult carcinoma within the gland. (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) |