An Unusual Case of Giant Arterio-Venous Malformation of Anterior Abdominal Wall.

Arterio-Venous Malformations (AVMs) are high flow vascular anomalies, commonly seen in head, neck and extremities. AVMs represent a direct connection between the arterial and the venous systems. They are congenital, often asymptomatic and rarely manifest before adolescence. Depending on the site, size and symptoms, treatment options varies from conservative management to surgical resection. Here, we report a case of 20-year-old male patient with long standing lump in the anterior abdominal wall with no typical clinical features of vascular lesions. However, imaging findings were suggestive of vascular malformation, and final histopathological examination revealed arterio-venous malformation.