Caliceal Obstruction Owing to a Large Parapelvic Cyst: Excretory Urography, Ultrasound and Computerized Tomography Findings

Abstract
Benign parapelvic cysts are a common finding on radiology studies. Rarely, a parapelvic cyst may enlarge enough to obstruct the renal calices. We report a case in which computerized tomography following an excretory urogram and ultrasound proved to be especially helpful in the noninvasive evaluation of an obstructing parapelvic cyst.

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