title: Spontaneous rupture of pyelocaliceal diverticulum.
abstract: One rare case of spontaneous rupture of pyelocaliceal diverticulum is reported in a 31-year-old Japanese man presented with a severe left flank pain. Intravenous pyelography and computerized tomography demonstrated extravasation of contrast medium from his diverticulum which contained numerous calculi. As a possible cause of spontaneous rupture of pyelocaliceal diverticulum in this case, we suggest that the paper-thin parenchyma covering the diverticulum was not strong enough to tolerate the minimum elevation of intrapelvic pressure due to the obstruction of delivered stones.
authors.affiliation: Department of Urology, Osaka National Hospital, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Hosomi
authors.forename: T
authors.initials: T
authors.lastname: Oka
authors.forename: O
authors.initials: O
authors.lastname: Miyake
authors.forename: K
authors.initials: K
authors.lastname: Matsumiya
authors.forename: M
authors.initials: M
authors.lastname: Takaha
authors.forename: S
authors.initials: S
authors.lastname: Pak
mesh_terms: D000328:Adult; D004240:Diverticulum / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007669:Kidney Calculi / Q000150:complications; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D007682:Kidney Pelvis / Q000473:pathology; D008297:Male; D012422:Rupture, Spontaneous; D014057:Tomography, X-Ray Computed; D014567:Urography