Case 2. A 52-year-old female with metastatic (lymph nodes, bone and brain) breast cancer, receiving chemotherapy and corticosteroids, submitted to body CT scan to rule out abdominal injury; axial CT image (detail of transverse colon), lung window. The image shows a moderate amount of intramural gas involving the caecum, ascending and transverse colon, with an extensive amount of gas in the mesenteric and pericolic fat; haustra are regular.