We report the case of a 33-year-old man presented with a posttraumatic 20-mm left ulnar artery aneurysm without intraluminal thrombus in the left hypothenar eminence. The patient reported left hand paresthesia. Because of symptoms and the embolic risk, we decide to plan an aneurysm resection and an interposition graft with inverted basilic vein for adequacy diameter (∼2 mm), but an end-to-end anastomosis was performed instead. We think that the posttraumatic distal artery aneurysm could be treated without a bypass but, after a meticulous anatomic dissection, with a microvascular anastomosis between the artery stumps.
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