— Ureterocele without corresponding renal tissue has been called blind ureterocele. We observed this rare malformation in two cases: a 17-year-old youth with the ureteral orifice located at the seminal vesicle and a 25-year-old woman with the orifice at the bladder neck. In both cases the proximal ureter ended in the lumbar fossa without renal parenchyma. The etiology of this ureterocele is unclear. Functioning renal tissue is supposed to be necessary for the development of a ureterocele: in blind ureterocele the renal parenchyma could subsequently disappear.
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3.
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4.
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ChwallaR.: The process of formation of cystic dilatations of the vesical end of the ureter and diverticula at the ureteral ostium. Urol. Cutan. Rev., 31: 499–505, 1927.
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8.
TokunakaS., GotohT., KayanagiT., TsujiI.: Morphological study of the ureterocele: a possible clue to its embryo-genesis as evidenced by a locally arrested myogenesis. J. Urol., 12 (6): 726–729, 1981.
