title: [Benign hemorrhagic renal cyst: a case report].
abstract: A case of benign hemorrhagic renal cyst in a 64-year-old man is reported. The patient was admitted to our hospital for further evaluation of left upper abdominal mass. CT scan and ultrasonic sonography showed a left giant renal cystic mass. The characteristic findings were thick and irregular wall and heterogeneous contents of the cystic mass. Selective renal arteriography showed a hypervascular area in a part of the cyst wall and hemorrhagic cyst was suspected by MR imaging. The presence of a malignant tumor in the cyst wall was suspected, and radical nephrectomy was performed. The specimen measured 18 x 12 x 8 cm and weighed 1,170 g. The cyst contained bloody fluid and a hemorrhagic degenerating mass. Pathohistological examination showed no evidence of malignant tumor at any site of the cyst wall.
authors.affiliation: Department of Urology, Osaka National Hospital.
authors.forename: Y
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Yasunaga
authors.forename: K
authors.initials: K
authors.lastname: Matsumiya
authors.forename: T
authors.initials: T
authors.lastname: Oka
authors.forename: M
authors.initials: M
authors.lastname: Takaha
authors.forename: A
authors.initials: A
authors.lastname: Kurata
mesh_terms: D006470:Hemorrhage / Q000175:diagnosis*; D006801:Humans; D007674:Kidney Diseases / Q000175:diagnosis*; D052177:Kidney Diseases, Cystic / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012077:Renal Artery / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography