title: Significance of the " beak sign"in the differential diagnosis of uterine lipoleiomyoma from ovarian dermoid cyst.
abstract: A case of uterine lipoleiomyoma in a 72-year-old woman is presented. Although a series of imaging studies suggested a lipomatous tumor, diagnosis was difficult because the tumor appeared as a pedunculated mass extending from the uterine body. To distinguish the tumor from an ovarian lipomatous tumor, the "beak sign" in a magnetic resonance imaging study was diagnostic in this case. The purpose of this paper is to review lipomatous masses of the female pelvis, to discuss the differential diagnosis of the unusual imaging features, and to discuss imaging techniques to optimize pelvic mass characterization.
authors.affiliation: Department of Radiology, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan. aririn@med.kurume-u.ac.jp
authors.forename: Shunji
authors.initials: S
authors.lastname: Arikawa
authors.forename: Masafumi
authors.initials: M
authors.lastname: Uchida
authors.forename: Masaharu
authors.initials: M
authors.lastname: Shinagawa
authors.forename: Tatsuyuki
authors.initials: T
authors.lastname: Tohnan
authors.forename: Naofumi
authors.initials: N
authors.lastname: Hayabuchi
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008067:Lipoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D010048:Ovarian Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014594:Uterine Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging