Abstract
Iliac vein aneurysms are a relatively rare clinical medical case requiring careful management. In general, vessel aneurysms are always an intriguing entity to approach due to the various options for diagnosis and treatment, which are heavily dependent on the unique characteristics of the condition. Such features include etiology, location, and coexistence with other abnormalities. In this case report, we describe the case of a patient who presented with an aneurysm in his internal iliac vein, as well as its tributaries, as a result of congenital arteriovenous communication.