Sonography of the radial artery at the wrist

Department of Radiology, University of California, San Francisco 94143.

The radial artery as a superficial structure at the wrist is susceptible both to direct penetrating injury and to blunt trauma, with the potential development of both false and true aneurysms. This report summarizes the sonographic features of seven consecutive patients who were referred for evaluation of the radial artery. The diagnoses include two cases of radial artery aneurysm, one tortuous nonaneurysmal artery, two cases of arteriovenous fistulae (one surrounded by fluid and one aneurysmal), a ganglion, and an inflammatory mass of the wrist. Although radial aneurysms are unusual and angiography may be required to define the nature and extent of distal embolization to the hand, the nature of a palpable aneurysm in this region, vascular vs avascular, is easily and quickly assessed with high-resolution sonography.
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