Reversible stenosis of the renal artery in cadaver kidney grafts: a report of three cases.

Regression of segmental renal artery stenosis was observed in three recipients of cadaver kidney allografts. At the time the stenoses were diagnosed the patients were severely hypertensive, had decreased renal function and elevated plasma renin activities. They were treated with antihypertensives and two of them with dipyridamole. Within a year, antihypertensive treatment could be discontinued in two patients, while the stenoses decreased considerably in all three patients. There was concomitant improvement in renal function and plasma renin activity. The role of dipyridamole remains uncertain.