cylindroma


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cylindroma

 [sil″in-dro´mah]
a benign skin tumor, usually on the face and scalp consisting of cylindrical masses of epithelial cells surrounded by a thick band of hyaline material. adj., adj cylindrom´atous.

cyl·in·dro·ma

(sil'in-drō'mă),
A histologic type of epithelial neoplasm, frequently malignant, characterized by islands of neoplastic cells embedded in a hyalinized stroma that may represent a thickened basement membrane; may form from ducts of glands, especially in salivary glands, skin, and bronchi; in the salivary glands, also termed adenoid cystic carcinoma.
Synonym(s): cylindroadenoma
[G. kylindros, cylinder, -oma, tumor]

cylindroma

/cyl·in·dro·ma/ (sil″in-dro´mah)
2. a benign skin tumor on the face and scalp, consisting of cylindrical masses of epithelial cells surrounded by a thick band of hyaline material.cylindrom´atous

cylindroma

[sil′indrō′mə] pl. cylindromas, cylindromata
Etymology: Gk, kylindros, cylinder
a tumor that appears to have cylinders of stroma surrounded by epithelial cells. See also adenocystic carcinoma.
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Cylindroma

cylindroma

A benign skin adnexal tumour, seen on the face, trunk and extremities, which has apocrine differentiation. Cylindromas may be solitary (and sporadic or multiple) with an autosomal dominant hereditary pattern. Cylindromas are often associated with trichoepitheliomas, especially on the scalp (turban tumour), first develop in adolescence and rarely undergo malignant degeneration.

cyl·in·dro·ma

(sil'in-drō'mă)
A histologic type of epithelial neoplasm, frequently malignant, characterized by islands of neoplastic cells embedded in a hyalinized stroma; may form from ducts of glands, especially in salivary glands, skin, and bronchi.
Synonym(s): cylindroadenoma.
[G. kulindros, roller, cylinder, fr. kulindō, to roll, + -oma, growth, neoplasm]

cyl·in·dro·ma

(sil'in-drō'mă)
Slow growing, infiltrative tumor frequently found in submaxillary and parotid salivary glands and accessory glands of the palate. Chief histologic feature is presence of uniform, small dark-staining basal cells in anastomosing cords, with acellular areas between.
[G. kulindros, roller, cylinder, fr. kulindō, to roll, + -oma, growth, neoplasm]

cylindroma (sil´indrō´mə),

n 1. an obsolete term for an adenoid cystic carcinoma. See carcinoma, adenoid cystic.
2. a benign adnexal neoplasm of skin that most often occurs on the scalp.

cylindroma

adenocystic carcinoma.
References in periodicals archive ?
The MYB-NFIB gene fusion-a novel genetic link between adenoid cystic carcinoma and dermal cylindroma.
Cutaneous cylindroma with malignant transformation.
110) The TP53 mutation has been reported in 2 cases of Spiradenocarcinomas (81) and one case of malignant cylindroma.
Table 1 Origin Benign Malignant Eccrine & Hidrocytoma Malignant tumor of apocrine (mixed the skin (has origin) Apocrine-eccrine eccrine /apocrine & nevus mesenchymal components) Tubulopapillary hidradenoma (7-9) Eccrine Chondroid Porocarcinoma Poroma syringoma Hidradenocarcinoma (10) Spiradenocarcinoma Hidradenoma Malignant cylindroma Spiradenoma Syringoid carcinoma Cylindroma Microcystic adnexal carcinoma Syringometaplasia Mucinous carcinoma Syringoma Adenoid cystic Syringofibroadenoma (11) carcinoma Aggressive digital papillary adenocarcinoma Syringocystadenocarcinoma Apocrine SCAP (12) Apocrine carcinoma Hidradenoma Extramammary Paget's papilliferum (13, 14) disease (15)
In 1859, Billroth coined the term cylindroma to describe the pathologic entity we now call adenoid cystic carcinoma.
Ceruminous gland neoplasms of external auditory canal and cylindroma.
Solitary cylindroma occur sporadically and occur most commonly on the skin of the head and neck.
The surgeon's misinterpretation of a pathologic diagnosis of dermal cylindroma as adenoid cystic carcinoma results from deviations in the formal semantic rules.
Other tumors with eccrine differentiation are malignant cylindroma, malignant eccrine poroma, malignant eccrine spiradenoma, malignant nodular hidradenoma and malignant chondroid syringoma.
Type of CVG Associated disease Primary essential CVG None Primary nonessential CVG Neurological: seizures, mental retardation Ocular: cataracts, optic atrophy Secondary * Acromegaly * Amyloidosis * Cylindroma * Connective tissue nevus * Focal mucinosis * Klinefelter syndrome * Leukemia * Myxedema * Melanocyte nevi'hamartomas * Neurofibroma * Nevus lipomatosus * Noonan syndrome * Pachydermoperiostosis * Tuberous sclerosis * Turner syndrome CVG Cutis verticis gyrata
Such an approach, however, poses several problems; for example, (1) some carcinomas have no benign counterpart and do not fit the scheme (eg, ductal carcinoma, adenoid cystic carcinoma, and mucinous carcinoma); (2) poorly differentiated carcinomas can be diagnosed only when a contiguous adenoma is found histologically; (3) histologic classification can be very complicated because adenomas are numerous and their classification is complex; and (4) terminology includes unusual and difficult terms, deriving from the terminology used for adenomas (eg, malignant acrospiroma, porocarcinoma, hidradenocarcinoma, malignant cylindroma, malignant spiradenoma, and syringo-cystadenocarcinoma).