title: Congenital intrarenal teratoma arising from a horseshoe kidney.
abstract: We report a case of intrarenal teratoma arising from a horseshoe kidney. A 6-day-old girl was admitted with an abdominal mass that had been noticed at 37 weeks gestation by routine ultrasonography. At 20 days of age, a tumorectomy with a right nephrectomy was performed. The pathological diagnosis was an immature teratoma. An intrarenal teratoma is extremely rare. In addition, we believe that this case represents the first case of an immature teratoma occurring in a horseshoe kidney. The diagnosis in this type of case is difficult, but we recommend that such tumors be included in the differential diagnosis.
authors.affiliation: Department of Surgery, Nagasaki University Graduate School of Medical Sciences, Nagasaki 852-8501, Japan. kyokyomocchi@hotmail.com
authors.forename: Kyoko
authors.initials: K
authors.lastname: Mochizuki
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Ohno
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Tokai
authors.forename: Takashi
authors.initials: T
authors.lastname: Kanematsu
authors.forename: Masahiko
authors.initials: M
authors.lastname: Okada
authors.forename: Akira
authors.initials: A
authors.lastname: Kamitamari
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Moriuchi
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Noguchi
authors.forename: Tomayoshi
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007668:Kidney / Q000002:abnormalities*; D007680:Kidney Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D009392:Nephrectomy; D013724:Teratoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016216:Ultrasonography, Prenatal; D014564:Urogenital Abnormalities / Q000150:complications