A case of a double variant of the arterial system in the upper extremity: Arteria brachialis accessoria et arteria comitans nervi mediani

A thorough knowledge of arteries of the upper extremity is necessary for catheterization, graft harvesting, shunt application, and Astrup's examination. Coincidences of two different variants are rather rare. We present a case of the coincidental presence of arteria brachialis accessoria stemming from the arteria axillaris and reuniting with the arteria brachialis 1.5cm below the origin of the arteria collateralis ulnaris inferior; and arteria comitans nervi median originated in association with the arteria interossea communis from the arteria ulnaris, passing into the palm and towards the arte- riae digitales palmares to the thumb, index and lateral side of the third finger. Such coincidence has never been reported before.