Laparoscopic excision of a spontaneously infected mesenteric duplication cyst.

Mesenteric cysts are rare intra-abdominal masses which can occur at any point in the gastrointestinal tract from the duodenum to the rectum. These cysts may remain asymptomatic or may present with an abdominal mass, abdominal pain, or fever. Management may be conservative, percutaneous, or surgical excision. Here we present a case of a spontaneously infected mesenteric cyst in a male in his early 70s who was undergoing surveillance of the cystic mass yearly following its incidental finding on CT 4 years prior.