| Abdominal and pelvic CT findings | Yes n (%) | No n (%) |
| Graveslope dilation > 25 cm upstream of the transition zone | 8 (67) | 4 (33) |
| Colonic dilatation > 50 cm upstream of the transition zone | 4 (33) | 8 (67) |
| Thickening of the cove wall at the transition zone | 10 (83) | 2 (17) |
| Hydro-air levels | 10 (83) | 2 (17) |
| Sublesional syndrome (flat bowels) | 5 (42) | 7 (58) |