title: Squamous cell carcinoma arising from mature cystic teratoma of the ovary with synchronous endometrial adenocarcinoma.
abstract: Squamous cell carcinoma arising from a mature cystic teratoma of the ovary is a rare event representing only 1-2% of all mature cystic teratomas. Furthermore, the synchronous occurrence of a second malignancy in this setting is extremely rare. A 63-year-old woman presented with a pelvic mass which was diagnosed as a left ovarian mature cystic teratoma preoperatively by ultrasonography. The frozen section of the mass revealed a left ovarian mature cystic teratoma with a focus of squamous cell carcinoma. Subsequently surgical staging procedure for ovarian cancer was performed. The final pathologic diagnosis was squamous cell carcinoma in mature cystic teratoma of the ovary, and synchronous endometrial adenocarcinoma with a mixture of endometrioid and mucinous subtypes as an incidental finding. The combination of these two synchronous cancers is unique and to the best of our knowledge, this has not been previously reported in the English language literature.
authors.affiliation: Department of Obstetrics and Gynecology, Ankara University School of Medicine, Ankara, Turkey. korhankahraman@hotmail.com
authors.forename: Korhan
authors.initials: K
authors.lastname: Kahraman
authors.forename: Serife Esra
authors.initials: SE
authors.lastname: Cetinkaya
authors.forename: Duygu
authors.initials: D
authors.lastname: Kankaya
authors.forename: Ilkkan
authors.initials: I
authors.lastname: Dünder
authors.forename: Feride
authors.initials: F
authors.lastname: Söylemez
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology* / Q000601:surgery; D018269:Carcinoma, Endometrioid / Q000473:pathology* / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008875:Middle Aged; D009367:Neoplasm Staging; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000601:surgery; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014463:Ultrasonography