Table 1.
CT findings of IC according to the different phases of disease and etiology.
| Acute phase (32) | Subacute phase (22) | Chronic phase (10) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Occlusive (12) | Nonocclusive (20) | P | Occlusive (4) | Nonocclusive (18) | P | Occlusive (1) | Nonocclusive (9) | P | |
| a | 12/12 (100%) | 20/20 (100%) | — | 4/4 (100%) | 4/18 (22.2%) | 0.01 | 0/1 | 0/9 | — |
| b | 8/12 (66.7%) | 10/20 (50%) | — | 3/4 (75%) | 0/18 | 0.003 | 0/1 | 0/9 | — |
| c | 5/12 (41.7%) | 9/20 (45%) | — | 1/4 (25%) | 2/18 (11.1%) | — | 0/1 | 0/9 | — |
| d | 9/12 (75%) | 0/20 | <0.001 | 1/4 (25%) | 18/18 (100%) | 0.003 | 0/1 | 0/9 | — |
| e | 9/12 (75%) | 0/20 | <0.001 | 1/4 (25%) | 18/18 (100%) | 3 | 1/1 (100%) | 9/9 (100%) | — |
| f | 9/12 (75%) | 0/20 | <0.001 | 1/4 (25%) | 18/18 (100%) | 0.003 | 0/1 | 0/9 | — |
| g | 3/12 (25%) | 1/20 (5%) | — | 3/4 (75%) | 0/18 | 3 | 0/1 | 0/9 | — |
| h | 1/12 (8.3%) | 20/20 (100%) | <0.001 | 3/4 (75%) | 0/18 | 0.003 | 1/1 (100%) | 6/9 (66.7%) | — |
| i | 0/12 | 17/20 (85%) | <0.001 | 0/4 | 8/18 (44.5%) | — | 0/1 | 4/9 (44.4%) | — |
| j | 0/12 | 1/20 (5%) | — | 0/4 | 0/18 | — | 0/1 | 0/9 | — |
The differences between occlusive and nonocclusive forms in each phase were analyzed and compared by means of Fisher's exact test. Values of P < 0.05 (bold) were considered statistically significant.
(pt) patients; (a) pericolic fluid; (b) peritoneal free fluid; (c) bowel wall hyperdensity at unenhanced CT; (d) hyperdensity with target configuration (two or three concentric rings) of colonic wall after i.v. contrast medium administration; (e) presence of bowel wall thickening (more than 3 mm in thickness); (f) shape of bowel thickness (uniform); (g) bowel wall hypodensity after i.v. contrast medium administration; (h) dilation of colonic lumen only gas-filled (diameter more than 5 cm); (i) parenchymal ischemia/infarction (liver and/kidney/spleen); (j) wall pneumatosis.