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Radionuclide Demonstration of Urinary Extravasation with Ureteral Obstruction

V.A. Center, Columbia Hospital, Medical College of Wisconsin, Milwaukee, Wisconsin

Correspondence: For reprints contact: En-Lin Yeh, Nuclear Medicine Service, V.A. Cr., Wood, Wi 53193.

ABSTRACT

Two cases of urinary extravasation with ureteral obstruction demonstrated by the radionuclide studies are reported. The value of radionuclide studies in patients with renal transplantation has been reported previously, but studies in patients without transplantation have rarely been described in the literature. Ureteral obstruction may cause urinary extravasation, which may be demonstrated by radionuclide studies even when radiologic studies are inconclusive. In one case, urinary extravasation was detected in the sitting position but not in the supine position. Renal imaging should probably be performed not only with multiple projections but also in different positions.