Solution: Diverticulitis is inflammation or perforation of colonic diverticula. The appearance of this case is characteristic with a diverticula surrounded by fall stranding and inflammation. Pertinent negative is that there is no associated abscess. Most commonly affects the sigmoid colon and CT is the most appropriate diagnostic tool. Sometimes difficult to differentiate from colon cancer, so patient should probably have direct visualization of the involved colon after symptoms have improved to ensure that there is not an underlying mass. Common indication for percutaneous abscess drainage and can result in other complications such as pylephlebitis (mesenteric/PV thrombosis and infection).