The diagnosis of segmental transplant renal artery stenosis by captopril renography

The captopril renogram test has been shown to be a sensitive test for the d iagnosis of renal artery stenosis in native and transplanted kidneys. Most reports have involved only stenosis of the main renal artery, Although segm ental renal artery stenosis has been diagnosed successfully in native kidne ys, it is not clear whether the captopril renogram test can diagnose segmen tal renal artery stenosis in a transplanted kidney. The authors report two cases of successful identification, by the captopril renogram test, of func tionally significant stenosis in an intrarenal branch of a single transplan t renal artery.