An unusual radiological presentation of mucinous adenocarcinoma of the colon.

We report a case of an elderly patient presenting with the left iliac fossa mass. The provisional diagnosis included an inflammatory diverticular mass or sigmoid colon cancer. Interestingly, computed tomography (CT) of the abdomen and pelvis demonstrated the left incarcerated Spigelian hernia containing an inflamed loop of the colon with signs of an early strangulation.