title: Choriocarcinoma metastatic to the lung. A cytologic study with identification of human choriogonadotropin with an immunoperoxidase technique.
abstract: A case of choriocarcinoma metastatic to the lung following a previous hydatidiform mole is presented. It was possible to make definitive identification of trophoblastic elements on a needle aspiration biopsy using an immunoperoxidase staining technique, thus avoiding diagnostic thoracotomy prior to therapeutic intervention. A method of immunoperoxidase staining of previously fixed and Papanicolaou-stained needle aspiration biopsy specimens is also described, and other uses of the immunoperoxidase technique on needle biopsy specimens are discussed.
mesh_terms: D000328:Adult; D002822:Choriocarcinoma / Q000473:pathology*; D006063:Chorionic Gonadotropin / Q000378:metabolism; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008175:Lung Neoplasms / Q000556:secondary; D009362:Neoplasm Metastasis; D011247:Pregnancy; D014594:Uterine Neoplasms / Q000473:pathology*
chemical_list: D006063:Chorionic Gonadotropin