Magnification angiography in the evaluation of transplanted kidneys.

Conventional and magnification angiography were performed on 34 occasions in 31 patients with renal allografts. The differential diagnosis between acute rejection and tubular necrosis was uncertain. In chronic rejection, where vascular abnormalities dominate, the diagnosis was easier. The magnification angiography demonstrated the small intrarenal arteries to better advantage, resulting in a more accurate assessment of the condition.