Pseudoaneurysm of the Mesenteric Artery Status Post Drain Placement for Complicated Diverticulitis.

Perforated diverticulitis presents a challenging clinical scenario for the surgeon. Development of an abscess in those without an acute abdomen may be amendable to non-operative drainage. Furthermore, early intervention can dramatically alter the hospital course let alone the overall outcome. While relatively safe as a procedure, image-guided drainage does carry risk that needs to be calculated relative to benefit gained. One rare albeit possibly serious risk is pseudoaneurysm formation.