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cystadenoma |
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cystadenoma /cys·tad·e·no·ma/ (sis-tad″ĕ-no´mah) adenoma characterized by epithelium-lined cystic masses that contain secreted material, usually serous or mucinous, generally in the ovaries, salivary gland, or pancreas. mucinous cystadenoma a multilocular, usually benign, tumor produced by ovarian epithelial cells and having mucin-filled cavities. papillary cystadenoma 1. any tumor producing patterns that are both papillary and cystic. 2. a type of adenoma in which the acini are distended by fluids or outgrowths of tissue. serous cystadenoma a cystic tumor of the ovary with thin, clear yellow serum and some solid tissue.
cystadenoma [sis′tədinō′mə] pl. cystadenomas, cystadenomata Etymology: Gk, kystis + aden, gland, oma, tumor 1 an adenoma associated with a cystoma. 2 an adenoma containing multiple cystic structures. The cysts may be serous, containing serum, or pseudomucinous, containing clear serous fluid or thick, viscid fluid. cystadenoma (sistˈ·aˈ·d n 1. cystic glandular tumor related to a glandular tumor. 2. a glandular tumor that contains multiple cysts. cystadenoma (sist´ad n an adenoma with the development of cystic spaces caused by dilation of acinar or ductal structures. cystadenoma, papillary, lymphomatosum (Warton's tumor), n a benign salivary gland tumor that consists of numerous cystic spaces lined by a double layer of epithelium. A dense aggregate of lymphocytes containing germinal centers surrounds the cystic spaces. cystadenoma cystoma blended with adenoma. mucinous cystadenoma a multilocular, usually benign, tumor produced by ovarian epithelial cells and having mucin-filled cavities. papillary cystadenoma any tumor producing patterns that are both papillary and cystic; called also papilloadenocystoma. serous cystadenoma a cystic tumor of the ovary containing thin, clear yellow serum and some solid tissue. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In 1995, Apel et al described a subtype of papillary carcinoma of the thyroid that is made up primarily or entirely of Hurthle cells within a lymphocytic stroma; this entity displays a striking resemblance to Warthin's tumor (papillary cystadenoma lymphomatosum of the salivary gland). MECs must be distinguished from necrotizing sialometaplasia, chronic sialadenitis, cystadenoma, cystadenocarcinoma, squamous cell carcinoma, epithelial-myoepithelial carcinoma, clear cell carcinoma (not otherwise specified), and metastatic tumors. False negatives and false positives for benign and malignant disease Pathology n False negatives, benign (n = 8) Pleomorphic adenoma 3 Oncocytoma 2 Cystadenoma 1 Myofibroblastic tumor 1 Warthin's tumor 1 False positives, benign (n = 2) Adenocarcinoma (arising 1 in pleomorphic adenoma) Lymphoma 1 False negatives, malignant (n = 5) Lymphoma 2 Adenocarcinoma (arising 1 in pleomorphic adenoma) Adenoid cystic carcinoma 1 Melanoma 1 False positive, maglinant (n = 1) Pleomorphic adenoma 1 |
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