epithelioma

1. An epithelial neoplasm or hamartoma of the skin, especially of skin appendage origin. 2. Obsolete term for a carcinoma of the skin derived from squamous, basal, or adnexal cells. [epithelium + G. -oma, tumor]
- e. adenoides cysticum SYN: trichoepithelioma.
- basal cell e. SYN: basal cell carcinoma.
- Borst-Jadassohn type intraepidermal e. precancerous lesions clinically suggestive of actinic or seborrheic keratosis, with nests of immature or abnormal keratinocytes within the epidermis.
- e. cuniculatum verrucous carcinoma occurring uncommonly on the sole of the foot, forming a slowly growing warty mass that may invade deeply but which rarely metastasizes.
- Malherbe calcifying e. SYN: pilomatrixoma.
- malignant ciliary e. malignant hyperplasia of ciliary epithelium with frequent involvement of the pigmented layer. SYN: adult medulloepithelioma.
- multiple self-healing squamous e. [MIM*132800] multiple skin tumors, most frequently on the head, each resembling a well-differentiated squamous carcinoma or keratoacanthoma; individual tumors resolve spontaneously after several months, leaving deep-pitted scars with irregular crenellated borders, and are usually replaced by additional new tumors; autosomal dominant inheritance.
- sebaceous e. a benign tumor of the sebaceous gland epithelium in which small basaloid or germinative cells predominate.

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ep·i·the·li·o·ma -.thē-lē-'ō-mə n, pl -mas also -ma·ta -mət-ə a benign or malignant tumor derived from epithelial tissue
ep·i·the·li·o·ma·tous -mət-əs adj

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n.
a tumour of epithelium, the covering of internal and external surfaces of the body: a former name for carcinoma.

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ep·i·the·li·o·ma (ep″ĭ-the″le-oґmə) [epithelio- + -oma] 1. a neoplasm of epithelial origin; these range from benign (adenomas and papillomas) to malignant (carcinomas). 2. sometimes used loosely and incorrectly as a synonym for carcinoma.

Medical dictionary. 2011.

Look at other dictionaries:

  • ÉPITHÉLIOMA — ou CARCINOME En anatomie pathologique, on désigne sous le nom d’épithélioma une tumeur maligne développée à partir des tissus épithéliaux, autrement dit un carcinome. Il existe deux grands groupes de carcinomes: Les carcinomes épidermoïdes dont… …   Encyclopédie Universelle

  • Epithelioma — Ep i*the li*o ma, n. [NL. See {Epithelium}, and { oma}.] (Med.) A malignant growth containing epithelial cells; called also {epithelial cancer}. [1913 Webster] …   The Collaborative International Dictionary of English

  • epithelioma — [ep΄i thē΄lē ō′mə] n. pl. epitheliomata [ep΄ə thē΄lē ō′mə tə] or epitheliomas [ModL < EPITHELIUM + OMA] any tumor composed mostly of epithelial cells: a former term for a malignant tumor of the skin …   English World dictionary

  • epithelioma — noun (plural mas; also ma•ta) Date: 1872 a tumor derived from epithelial tissue • epitheliomatous adjective …   New Collegiate Dictionary

  • epithelioma — epitheliomatous /ep euh thee lee om euh teuhs, oh meuh /, adj. /ep euh thee lee oh meuh/, n., pl. epitheliomas, epitheliomata / meuh teuh/. Pathol. a growth or tumor consisting chiefly of epithelial cells. [1870 75; EPITHELI(UM) + OMA] * * * ▪… …   Universalium

  • epithelioma — noun Any tumor that originates in the epithelium …   Wiktionary

  • épithélioma — (é pi té li o ma) s. m. Terme de chirurgie. Synonyme de tumeur épithéliale …   Dictionnaire de la Langue Française d'Émile Littré

  • epithelioma — n. cancer, malignant growth or tumor composed mainly of epithelial cells …   English contemporary dictionary

  • epithelioma — ep·i·the·li·o·ma …   English syllables

  • epithelioma — n. a tumour of epithelium, the covering of internal and external surfaces of the body: a former name for carcinoma …   The new mediacal dictionary

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