Mirror image aneurysms of the ulnar artery in the palm.

A case of sequential bilateral ulnar artery aneurysms in the palm is reported. Thirty-five unilateral true aneurysms in the hypothenar area are reported in the literature and most have been associated with repeated trauma to the palm. The diagnosis is easily established from physical examination. Definition of the anatomic relationships of the aneurysm is by selective arteriography. Surgical excision or ligation of the communicating arteries is curative.