Table 1.
Clinical and pathological features of the concurrent carcinomas detected by computed tomography
| Concurrent lesions |
Incomplete colonoscopy |
P value |
Complete colonoscopy |
P value | ||
| CT+ (n = 13) | CT- (n = 16) | CT+ (n = 43) | CT- (n = 20) | |||
| Sex (M/F) | 8/5 | 11/5 | 26/17 | 16/4 | ||
| Median age (yr) | 63 | 69 | 66 | 63 | ||
| Mean maximum dimension (mm) | 38 ± 11 | 24 ± 5 | 0.02 | 37 ± 13 | 25 ± 9 | < 0.01 |
| Gross appearance | 0.20 | 0.18 | ||||
| Protruding | 9 | 7 | 23 | 10 | ||
| Ulcerated | 2 | 5 | 9 | 8 | ||
| Sclerotic | 2 | 4 | 11 | 2 | ||
| Differentiation | 0.17 | 0.06 | ||||
| Well | 3 | 4 | 9 | 8 | ||
| Moderate | 5 | 7 | 22 | 4 | ||
| Poor | 5 | 5 | 12 | 8 | ||
| Location | 0.71 | 0.41 | ||||
| Ascending colon | 5 | 4 | 14 | 6 | ||
| Transverse colon | 2 | 2 | 6 | 4 | ||
| Descending colon | 4 | 5 | 13 | 6 | ||
| Sigmoid colon | 2 | 3 | 8 | 1 | ||
| Rectum | 0 | 2 | 2 | 3 | ||
| Colonic obstruction | 0.46 | - | ||||
| Yes | 6 | 10 | 0 | 0 | ||
| No | 7 | 6 | 43 | 20 | ||
| Average distance to index tumor (cm) | 36.77 ± 6.86 | 19.88 ± 4.16 | 0.04 | 36.65 ± 3.55 | 24.00 ± 5.11 | 0.05 |
| Located in the same bowl segments with index tumor | 0.03 | 0.03 | ||||
| Yes | 3 | 11 | 13 | 12 | ||
| No | 10 | 5 | 30 | 8 | ||