title: Cystic Endometrioma with Coexisting Fibroma Originating in a Supernumerary Ovary in the Rectovaginal Pouch.
abstract: A supernumerary ovary is an exceedingly rare disorder, in which the structure containing ovarian tissue is located at some distance from the normally placed ovary. 16 cases of endometriosis or tumors originating in a supernumerary ovary have been published in the English literature, but no case of coexisting endometriosis and a tumor has been published. We present the case of a 40-year-old female with cystic endometrioma with coexisting fibroma originating in a supernumerary ovary in the rectovaginal pouch. The present case is the first to be reported with coexisting endometriosis and a tumor originating in a supernumerary ovary. Our experience with this case and the results of our previous studies of rectovaginal endometriosis indicated that the possibility of originating in a supernumerary ovary shall be examined in cases of cystic endometrioma in the rectovaginal pouch.
authors.affiliation: Department of Obstetrics and Gynecology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Daiki
authors.identifier: 0000-0002-0725-7613
authors.initials: D
authors.lastname: Ogishima
authors.affiliation: Department of Diagnostic Pathology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Asumi
authors.initials: A
authors.lastname: Sakaguchi
authors.affiliation: Department of Diagnostic Pathology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Hiroko
authors.initials: H
authors.lastname: Kodama
authors.affiliation: Department of Diagnostic Pathology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Kanako
authors.initials: K
authors.lastname: Ogura
authors.affiliation: Department of Obstetrics and Gynecology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Ayako
authors.initials: A
authors.lastname: Miwa
authors.affiliation: Department of Obstetrics and Gynecology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Sugimori
authors.affiliation: Department of Obstetrics and Gynecology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Shozo
authors.initials: S
authors.lastname: Matuoka
authors.affiliation: Department of Diagnostic Pathology, Juntendo University Nerima Hospital, Tokyo, Japan.
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Matsumoto