title: Ovarian involvement of epithelioid trophoblastic tumor: a case report.
abstract: Epithelioid trophoblastic tumor (ETT) is an uncommon type of gestational trophoblastic neoplasia originating from the chorionic-type intermediate trophoblast. To our knowledge, ovarian involvement of ETT with initial presentation as an ovarian tumor has not been reported. A 32-year-old woman presented with a 9-cm left ovarian mass. No clinical evidence of uterine involvement was identified at diagnosis or follow-up. The patient had a previous history of hydatidiform mole treated with suctional curettage 5 years before. Ovarian involvement of ETT can be challenging to pathologists and may be potentially confused with ovarian epithelial carcinoma, particularly of clear cell differentiation.
authors.affiliation: Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand. skhunamo@med.cmu.ac.th
authors.forename: Surapan
authors.initials: S
authors.lastname: Khunamornpong
authors.forename: Jongkolnee
authors.initials: J
authors.lastname: Settakorn
authors.forename: Kornkanok
authors.initials: K
authors.lastname: Sukpan
authors.forename: Prapaporn
authors.initials: P
authors.lastname: Suprasert
authors.forename: Sumalee
authors.initials: S
authors.lastname: Siriaunkgul
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D003609:Dactinomycin / Q000008:administration & dosage / Q000627:therapeutic use; D005047:Etoposide / Q000008:administration & dosage / Q000627:therapeutic use; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000473:pathology; D007150:Immunohistochemistry; D008727:Methotrexate / Q000008:administration & dosage / Q000627:therapeutic use; D016609:Neoplasms, Second Primary / Q000188:drug therapy / Q000473:pathology*; D010051:Ovarian Neoplasms / Q000188:drug therapy / Q000473:pathology*; D011247:Pregnancy; D014328:Trophoblastic Neoplasms / Q000188:drug therapy / Q000473:pathology*; D014594:Uterine Neoplasms / Q000473:pathology
chemical_list: D003609:Dactinomycin; D005047:Etoposide; D008727:Methotrexate