title: Case of mature cystic teratoma of the greater omentum misdiagnosed as ovarian cyst.
abstract: The teratoma of the greater omentum is a very rare entity. We present a case of mature cystic teratoma of the greater omentum misdiagnosed as ovarian cyst. The patient was a 36-year-old woman with an omental teratoma of 5 x 4 x 4 cm and an atrophic left ovary. The histopathologic diagnosis was mature cystic teratoma of the greater omentum and no evidence of immaturity or malignancy was noted. Preoperative tumor marker tests revealed moderate elevation of cancer antigen (CA)125, CA19-9 and carcinoembryonic antigen. The left ovary of the patient was atrophic and possible autoamputation of the ovarian tissue might be suggested.
authors.affiliation: Department of Obstetrics and Gynecology, National Hospital Organization Nishisaitama-Chuo National Hospital, Saitama, Japan. yoshida.atsushi@nifty.ne.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Yoshida
authors.forename: Nao
authors.initials: N
authors.lastname: Murabayashi
authors.forename: Takaya
authors.initials: T
authors.lastname: Shiozaki
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Okugawa
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Tabata
mesh_terms: D000328:Adult; D018394:CA-125 Antigen / Q000097:blood; D018395:CA-19-9 Antigen / Q000097:blood; D002272:Carcinoembryonic Antigen / Q000097:blood; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D009852:Omentum / Q000473:pathology* / Q000601:surgery; D010048:Ovarian Cysts / Q000175:diagnosis; D010534:Peritoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D013724:Teratoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery
chemical_list: D018394:CA-125 Antigen; D018395:CA-19-9 Antigen; D002272:Carcinoembryonic Antigen