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Inadvertent percutaneous transluminal dilatation of a renal artery with a four-year follow-up.

The author presents a case of severe stenosis of the left renal artery with poststenotic dilatation. While performing a left arteriogram, a catheter was passed inadvertently through the stenosis, which resulted in the angiographic disappearance of the stenosis and the disappearance of an accompanying abdominal bruit. Dilatation was maintained when he returned four years later with hypertension and stenosis of the right renal artery. A left renal angiogram showed no stenosis. The long term result of this case suggests that deliberate dilatation of renal arteries may last for several years.