title: Adenomyosis with a sex cord-like stromal element.
abstract: A case of adenomyosis with a sex cord-like stromal element is described. The element was an incidental, solitary, microscopic finding in a focus of adenomyosis. It was characterized by cord and trabecular arrangements of round to polygonal shaped cells in the endometrioid stroma. The cells were immunohistochemically positive for desmin and alpha-smooth muscle actin but negative for sex cord markers (alpha-inhibin and O13). The element appears to originate from the endometrial stromal cells through smooth muscle metaplasia.
authors.affiliation: Department of Pathology, The Jikei University School of Medicine, Tokyo, Japan. maasafu@jikei.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Fukunaga
mesh_terms: D000328:Adult; D004715:Endometriosis / Q000473:pathology / Q000503:physiopathology; D005260:Female; D006801:Humans; D017154:Stromal Cells / Q000473:pathology; D014599:Uterus / Q000473:pathology