Fig. 6
From: Imaging the postoperative patient: long-term complications of gastrointestinal surgery
a–c Patient with bowel ischemia secondary to a strangulated obstruction. Gas inside the mesenteric veins (arrowheads in b) coming from a bowel segment that also presents intramural gas (curved arrows in a, b) after perforation of a gangrenous bowel wall are seen. Portal venous gas (arrows in c) and pneumoperitoneum (stars in a, c) are also evident