Urine leaks in renal transplant patients - Diagnostic usefulness of sonography and renography

We evaluated the utility of sonography and nuclear medicine renography in t he detection of urine leaks in 57 renal transplant patients. Sonography and renography were equally sensitive in detecting leaks. But renography was m ore specific and therefore accurate (p < 0.0002) in detecting leaks. Urine leaks should be considered on sonography, which is often the first imaging study ordered in evaluating renal transplants, with new or increasing perit ransplant fluid collections. Leaks should be confirmed by renography before performing additional inversive radiologic or surgical procedures. (C) Els evier Science Inc., 1999.