A benign neoplasm of adipose tissue, composed of mature fat cells. SYN: adipose tumor. [lipo- + G. -oma, tumor]
- l. annulare colli an encircling growth of l. (or coalescent lipomas) in the neck, resulting in a collar-like enlargement. SEE ALSO: Madelung neck.
- l. arborescens an irregularly shaped l. involving the synovial membrane of a joint, resulting in fingerlike or treelike hyperplastic folds in the villi.
- atypical l. l., 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. SYN: pleomorphic l..
- l. capsulare a well-circumscribed mass resulting from a greatly increased amount of adipose tissue adjacent to the breast.
- l. cavernosum SYN: angiolipoma.
- l. fibrosum SYN: fibrolipoma.
- l. myxomatodes SYN: myxolipoma.
- l. ossificans a l. in which metaplasia occurs and small foci of bone are formed.
- l. petrificans a l. in which degeneration and necrosis results in a considerable amount of dystrophic calcification.
- pleomorphic l. SYN: atypical l..
- spindle cell l. a microscopically distinctive benign form of l. in which adipose tissue is infiltrated by fibroblasts and collagen; usually found in the shoulder or neck of elderly men.

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li·po·ma li-'pō-mə, lī- n, pl -mas also -ma·ta -mət-ə a tumor of fatty tissue
li·po·ma·tous -mət-əs adj

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n. (pl. lipomas or lipomata)
a common benign tumour composed of well-differentiated fat cells.

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lip·o·ma (lip-oґmə) [lip- + -oma] a benign, soft, rubbery, encapsulated tumor of adipose tissue, usually composed of mature fat cells; it generally occurs as a solitary lesion in the subcutaneous tissue of the trunk, nucha, or forearms but may occur in deeper soft tissues. lipomatous adj

Medical dictionary. 2011.

Look at other dictionaries:

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  • Lipoma — Clasificación y recursos externos CIE 10 D 17, d 10; E 27.2, e 20 CIE 9 214 CIE O 8850.0 …   Wikipedia Español

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  • Lipoma — Li*po ma (l[i^]*p[=o] m[.a]), n. [NL., from Gr. li pos fat + oma.] (Med.) A tumor consisting of fat or adipose tissue. {Li*pom a*tous} ( p[o^]m [.a]*t[u^]s), a. [1913 Webster] …   The Collaborative International Dictionary of English

  • Lipōma — (griech., Lipōm), s. Fettgeschwulst …   Meyers Großes Konversations-Lexikon

  • lipoma — fatty tumor (plural lipomata), 1830, medical Latin, from Gk. lipos fat (n.), see LIPO (Cf. lipo ), + OMA (Cf. oma) …   Etymology dictionary

  • lipoma — |ô| s. m. Tumor adiposo.   ‣ Etimologia: lipo + oma …   Dicionário da Língua Portuguesa

  • lipoma — (De lipo y oma). m. Med. Tumor formado de tejido adiposo …   Diccionario de la lengua española

  • lipoma — [li pō′mə, līpō′mə] n. pl. lipomata [lī pō′mətə, li pō′mətə] or lipomas [ModL: see LIP(O) & OMA] a benign tumor made up of fat tissue lipomatous [līpäm′ə təs, lipäm′ə təs] adj …   English World dictionary

  • lipoma — (Del gr. lipos, grasa + oma, tumor.) ► sustantivo masculino MEDICINA Tumor benigno formado por la acumulación de tejido adiposo. * * * lipoma (de «lip » y « oma») m. Med. *Tumor de grasa. * * * lipoma. (De …   Enciclopedia Universal

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