title: Choriocarcinoma of the colon.
abstract: Primary choriocarcinoma of the colon is exceedingly rare. Only two cases have been previously reported, both located in the sigmoid colon. A case of choriocarcinoma arising in association with adenocarcinoma of the ascending colon (cecum) in a 35-year-old woman is described. Immunoperoxidase staining showed beta-human chorionic gonadotrophin to be present in the choriocarcinomatous portion of the primary tumor and in the metastases. Theories concerning the histogenesis of this rare neoplasma are briefly reviewed.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000328:Adult; D002430:Cecal Neoplasms / Q000473:pathology*; D002822:Choriocarcinoma / Q000473:pathology*; D006063:Chorionic Gonadotropin / Q000032:analysis; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008207:Lymphatic Metastasis; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D011247:Pregnancy
chemical_list: D006063:Chorionic Gonadotropin