Digital subtraction angiography (DSA) was used to study arterial complications following renal transplantation in 33 patients. The results were compared with clinical follow-up and in three cases with conventional angiography. In 9 per cent using DSA (3 cases) we experienced inadequate visualization of the renal arteries of the graft; in 91 per cent, the visualization was diagnostically sufficient. In 53 per cent, we discovered an arterial stenosis of the main artery or segmental artery and in one case an AV-fistula. No morbidity resulted during the procedure. We consider DSA to be the best non-invasive method in the evaluation of patients with suspected renal artery stenosis following kidney transplantation.