title: Yolk sac tumor of the ovary: radiologic-pathologic correlation in four cases.
abstract: We report the radiologic and pathologic features of yolk sac tumor (endodermal sinus tumor) of the ovary in four patients. Yolk sac tumors were shown as well-enhancing solid tumors on both CT and MR studies and were associated with prominent signal voids on MRI. A hypervascular nature was confirmed on microscopic studies. Areas of hemorrhage were another common characteristic. These imaging findings seem to have an important implication for the diagnosis of this tumor.
authors.affiliation: Department of Nuclear Medicine and Diagnostic Imaging, Hitachi Medical Corporation, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamaoka
authors.forename: K
authors.initials: K
authors.lastname: Togashi
authors.forename: T
authors.initials: T
authors.lastname: Koyama
authors.forename: H
authors.initials: H
authors.lastname: Ueda
authors.forename: A
authors.initials: A
authors.lastname: Nakai
authors.forename: S
authors.initials: S
authors.lastname: Fujii
authors.forename: H
authors.initials: H
authors.lastname: Yamabe
authors.forename: J
authors.initials: J
authors.lastname: Konishi
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D018240:Endodermal Sinus Tumor / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D010051:Ovarian Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed