Abstract
A 53-year-old female with chronic renal failure who had undergone regular hemodialysis through a radialcephalic arteriovenous fistula on her right arm, visited our outpatient clinic complaining of a pulsatile tumor in the right arm. The tumor, measuring 7×3cm, was found at the central portion of the left anterior arm where the fistula had been made. Color Doppler ultrasonography revealed an aneurysm from the radial artery under the fistula. The next day, the tumor enlarged, so an emergent operation was performed under the diagnosis of a ruptured aneurysm. The aneurysm was resected and direct end-to-end anastomosis of the two divided arteries was made. The patient recovered uneventfully and hemodialysis was restarted on the first postoperative day. Microscopic examination of the aneurysm revealed only fibrous and scarring changes, so the diagnosis of a pseudoaneurysm was made.
