Arteriovenous malformation with pseudoaneurysm on the left upper limb.

A 61-year-old woman developed a pulsatile mass on the left upper limb and was diagnosed with arteriovenous malformation with pseudoaneurysm. A two-stage operation including ligation and resection of the aberrant branches and subsequent resection of the mass with revascularization was performed. Histological analysis suggested arteriovenous malformation and pseudoaneurysm.