Pulsatile swelling in the forearm

A middle aged man presented with pulsatile swelling in the upper part of the right forearm. There was no history of trauma. There were no dilated pulsatile veins. Radial and ulnar arteries were palpable at the wrist. Duplex scan reported it as a vascular tumor. The Spiral CT angiogram showed lesion arising from the proximal 1/3 of the radial artery. Abnormal dilatations connected with normal radial artery. The picture was not typical of aneurysm. During surgery mass looking like thrombosed aneurysm was completely excised and sent for histopathological examination. The report came as Masson's hemangioma (benign condition) and complete excision is the curative treatment.