[Aneurysms of branches of the renal artery: surgery in situ].

Renal artery aneurysms (RAA) are rare lesions, often associated with hypertension. In order to evaluate the benefit in terms of blood pressure of elective cure of a fibrodysplastic renal artery aneurysm in hypertensive patients, 22 patients were studied retrospectively. With a mean follow-up of 66 months, correction or improvement of hypertension was obtained in all patients with an isolated aneurysm or an aneurysm associated with haemodynamic lesions of the renal artery, treated at the same time, but only 40% of cases when the aneurysm was associated with non-haemodynamic lesions. Direct criteria attributing the hypertension to the aneurysm were generally absent.