| lipoma | <oncology, tumour> Clumps of fat cells. Literally, fat cancer. These are benign tumours that can form in the breast. (16 Dec 1997) |
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| lipoma annulare colli | An encircling growth of lipoma (or coalescent lipoma's) in the neck, resulting in a collar-like enlargement. See: Madelung's neck. (05 Mar 2000) |
| lipoma arborescens | An irregularly shaped lipoma involving the synovial membrane of a joint, resulting in fingerlike or treelike hyperplastic folds in the villi. (05 Mar 2000) |
| lipoma capsulare | A well-circumscribed mass resulting from a greatly increased amount of adipose tissue adjacent to the breast. (05 Mar 2000) |
| lipoma cavernosum | A benign neoplasm composed of a mixture of adipose tissue and blood vessels. (12 Dec 1998) |
| lipoma fibrosum | <tumour> A lipoma with an abundant stroma of fibrous tissue. Synonym: lipoma fibrosum. (05 Mar 2000) |
| lipoma myxomatodes | <tumour> A benign neoplasm of adipose tissue in which portions of the tumour resemble mucoid mesenchymal tissue. Synonym: lipoma myxomatodes, myxoma lipomatosum. Origin: myxo-+ G. Lipos, fat, + -oma, tumour (05 Mar 2000) |
| lipoma ossificans | A lipoma in which metaplasia occurs and small foci of bone are formed. (05 Mar 2000) |
| lipoma petrificans | A lipoma in which degeneration and necrosis results in a considerable amount of dystrophic calcification. (05 Mar 2000) |
| lipoma sarcomatodes | A malignant tumour derived from primitive or embryonal lipoblastic cells. It may be composed of well-differentiated fat cells or may be dedifferentiated: myxoid (liposarcoma, myxoid), round-celled, or pleomorphic, usually in association with a rich network of capillaries. Recurrences are common and dedifferentiated liposarcomas metastasize to the lungs or serosal surfaces. (12 Dec 1998) |
| lipomatoid | Resembling a lipoma, frequently said of accumulations of adipose tissue that is not thought to be neoplastic. (05 Mar 2000) |
| lipomatosis | A condition characterised by abnormal localised, or tumour-like, accumulations of fat in the tissues. (12 Dec 1998) |
| lipomatosis neurotica | <disease> A disease accompanied by painful localised fatty swellings and by various nerve lesions. It is usually seen in women and may cause death from pulmonary complications. (12 Dec 1998) |
| lipomatosis, multiple symmetrical | Multiple circumscribed or encapsulated lipomas which may be distributed symmetrically or haphazardly or which may form a collar around the neck. (12 Dec 1998) |
| lipomatous | Pertaining to or manifesting the features of lipoma, or characterised by the presence of a lipoma (or lipomas). (05 Mar 2000) |
| atypical lipoma | <tumour> Lipoma, occurring primarily in older men on the posterior neck, shoulders, and back, which is benign but microscopically atypical, containing giant cells with multiple overlapping nuclei forming a circle. Synonym: pleomorphic lipoma. (05 Mar 2000) |
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| CNS lipoma | <radiology> Incidence: less than1% of brain tumours, age: presentation in childhood/adulthood, associated with agenesis of corpus callosum in 50%, assymptomatic in 50% location: genu of corpus callosum (25-50%), tuber cinerum, quadrigeminal region, chiasmatic, interpeduncular, sylvian, CP angle, and cerebellomedullary cisterns findings: -100 HU on CT, occasionally calcified rim (especially in corpus callosum), no enhancement, hyperintense on T1 (characteristic) (12 Dec 1998) |
| pleomorphic lipoma | <tumour> Lipoma, occurring primarily in older men on the posterior neck, shoulders, and back, which is benign but microscopically atypical, containing giant cells with multiple overlapping nuclei forming a circle. Synonym: pleomorphic lipoma. (05 Mar 2000) |
| spindle cell lipoma | <tumour> A microscopically distinctive form of lipoma in which adipose tissue is infiltrated by fibroblasts and collagen; usually found in the shoulder or neck of elderly men. (05 Mar 2000) |
| infiltrating lipoma | A malignant tumour derived from primitive or embryonal lipoblastic cells. It may be composed of well-differentiated fat cells or may be dedifferentiated: myxoid (liposarcoma, myxoid), round-celled, or pleomorphic, usually in association with a rich network of capillaries. Recurrences are common and dedifferentiated liposarcomas metastasize to the lungs or serosal surfaces. (12 Dec 1998) |
| telangiectatic lipoma | A benign neoplasm composed of a mixture of adipose tissue and blood vessels. (12 Dec 1998) |
| lipoblastic lipoma | A malignant tumour derived from primitive or embryonal lipoblastic cells. It may be composed of well-differentiated fat cells or may be dedifferentiated: myxoid (liposarcoma, myxoid), round-celled, or pleomorphic, usually in association with a rich network of capillaries. Recurrences are common and dedifferentiated liposarcomas metastasize to the lungs or serosal surfaces. (12 Dec 1998) |