Mycotic aneurysm in a digital artery: case report and literature review.

A mycotic aneurysm of the common digital artery at its junction with the palmar arch, extending into the ulnar proper digital artery of the index finger, is reported in a patient with endocarditis. A review of the English-language literature revealed no case of mycotic aneurysm in a digital artery. Diagnosis of the aneurysm was established noninvasively by ultrasound. Because this patient lacked a radial proper digital artery to the finger, the aneurysm was managed by excision and revascularization with a bypass graft from the long finger. Postoperative circulatory monitoring was facilitated by a pulse oximeter.