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cystadenoma

   Also found in: Wikipedia 0.03 sec.
cystadenoma /cys·tad·e·no·ma/ (sis-tad?e-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.

cyst·ad·e·no·ma (s-stdn-m)
n.
A benign tumor derived from glandular tissue, in which secretions are retained and accumulate in cysts. Also called cystoadenoma.

cystadenoma (sistˈ·aˈ·d·nōˑ·m),
n 1. cystic glandular tumor related to a glandular tumor.
2. a glandular tumor that contains multiple cysts.
Enlarge picture
Cystadenoma.

cystadenoma (sist´adnō´m),
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.

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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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