SIGMOID COLON - Pneumotosis Coli

The specimen is an open portion of sigmoid colon measuring 36 cm in length. The wall of the large bowel is expanded by numerous cystic structures, these are situated predominantly in the submucosa as seen at the cut edge of the specimen. The cysts are of variable size being empty and measuring up to 1 cm in maximum extent.
The patient presented with a long history of diarrhoea and abdominal pain. Extensive pneumotosis coli was diagnosed on sigmoidoscopic examination.