title: A Case of Primary Gastric Choriocarcinoma Presenting with Amenorrhea.
abstract: Primary gastric choriocarcinomas are very rare, and their prognosis is extremely poor. A 37-year-old woman presented with amenorrhea, vaginal spotting and severe nausea, which mimicked a pregnancy and gestational trophoblastic disease. The serum level of the beta-subunit of human chorionic gonadotrophin (beta-hCG) was significantly increased. An endoscopic biopsy of the stomach mass showed the features of a choriocarcinoma, with marked anaplasia and necrosis. Immunohistochemical staining for beta-hCG showed positive results in the choriocarcinoma. Chemotherapy for the choriocarcinoma was administered, but she died 8 months following diagnosis.
authors.forename: Seung Hyun
authors.initials: SH
authors.lastname: Nam
authors.forename: Seock Ah
authors.initials: SA
authors.lastname: Im
authors.forename: Ki Sun
authors.initials: KS
authors.lastname: Bae
authors.forename: In Sook
authors.initials: IS
authors.lastname: Kang
authors.forename: Jung Mi
authors.initials: JM
authors.lastname: Kwon
authors.forename: Kyung Eun
authors.initials: KE
authors.lastname: Lee
authors.forename: Hye Sung
authors.initials: HS
authors.lastname: Moon
authors.forename: Sun Hee
authors.initials: SH
authors.lastname: Sung
authors.forename: Woon Sup
authors.initials: WS
authors.lastname: Han
authors.forename: Chu Myong
authors.initials: CM
authors.lastname: Seong
authors.forename: Soon Nam
authors.initials: SN
authors.lastname: Lee
keywords: Chemotherapy; Choriocarcinoma; Human chorionic gonadotrophin; Stomach