Division of Nuclear Medicine, University of Alabama, Birmingham Medical Center.
A captopril renal study performed with both radiohippuran and 99mTc-MAG3 demonstrated the typical changes of a hemodynamically significant renal artery stenosis in a hypertensive renal allograft recipient. Arteriography demonstrated high grade stenosis not of the renal artery but of the iliac artery. After successful angioplasty, the patient's hypertension resolved.