True aneurysm of the palmar arch. A resection without reconstruction.

A case of ideopathic true aneurysm of the left palmar arch in a 75-year-old female is reported. Surgical exploration and resection of the aneurysm was done. The need for vascular reconstruction was evaluated by means of a pulse oxymeter on the fingertips intra-operatively. Resection was done without reconstruction with no averse effects. Histology confirmed the diagnosis of a true aneurysm with inside proliferation of connective tissue and endothelical cells called: "angioma vegetant of Masson".