Spontaneous Peripelvic Urinary Extravasation without Kidney Rupture

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Abstract
SPONTANEOUS peripelvic urinary extravasation occurring in the absence of rupture of the renal parenchyma or renal pelvis is rare. This may follow acute ureteral obstruction, the urinary extravasation spreading by way of the calyceal fornices, to the pericalyceal connective tissue and then through the hilus into the perirenal fat within Gerota's fascia. Since the differential diagnosis of pain in the flank and lower quadrant of the abdomen is of great clinical importance, and because there have been few reports of spontaneous urinary extravasation proved by excretory urography, the following complex diagnostic problem and case history is presented. An awareness of . . .