Angiographic nephrectomy using iodinated contrast agent.
Diatrizoate meglumine and sodium (Renografin-76) was perfused in an obstructed renal artery in 13 dogs. Intense and prolonged accumulation of contrast agent ("contrast staining") was achieved in all animals. Repeat injection was frequently necessary to enhance staining. Renin output from the stained kidneys was lower than that from the opposite kidneys. Angiography at 14-18 weeks demonstrated a marked decrease in renal size in all dogs, with complete occlusion of the renal artery in two dogs. No collateral circulation was discerned. Grossly, all experimental kidneys were uniformly shrunken. Histologically, diffuse renal infarction was evident with coagulative necrosis. Contrast staining is an effective method for uniform destruction of renal tissue.