title: [Primary megaureter which showed aplasia of the muscle bundles on all dilated portions: a case report].
abstract: A case of primary megaureter in a 59-year-old man which might shed light on the etiology and pathology is described. Intravenous urography and the computed tomography showed a left marked hydro-nephro-ureter which compressed the bladder and right ureter. In the left ureter, dilated portions stretched beyond dilated portions; that is, five non-dilated portions lay among four dilated portions. On histological examination of this specimen, all dilated portions showed aplasia of muscle in which muscle bundles were not observed, while all non-dilated portions including ureterovesical junction showed normal muscle layers. A case presentation and brief review of the literature were made.
authors.affiliation: Department of Urology, Kansai Medical University.
authors.forename: N
authors.initials: N
authors.lastname: Nakatake
authors.forename: O
authors.initials: O
authors.lastname: Osawa
authors.forename: H
authors.initials: H
authors.lastname: Shintani
authors.forename: Y
authors.initials: Y
authors.lastname: Komatz
mesh_terms: D004108:Dilatation, Pathologic; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology; D008297:Male; D008875:Middle Aged; D014513:Ureter / Q000002:abnormalities* / Q000473:pathology