title: Mixed mesodermal tumor and clear cell carcinoma arising in ovarian endometriosis.
abstract: A case is reported of clear cell carcinoma, arising as several papillary masses from the lining of an endometrial cyst within the ovary, associated with a mixed mesodermal tumor arising in the stalk of the largest papillary nodule. The origin of this tumor from within a focus of endometriosis lends support to the theory that both the epithelial and mesodermal components are of Müllerian (Paramesonephric) origin.
mesh_terms: D000230:Adenocarcinoma / Q000209:etiology / Q000473:pathology*; D004715:Endometriosis / Q000209:etiology / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009373:Neoplasms, Germ Cell and Embryonal / Q000209:etiology / Q000473:pathology*; D009378:Neoplasms, Multiple Primary / Q000209:etiology / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000209:etiology / Q000473:pathology*