Table 3.
Characteristics of post colonoscopy colorectal cancers at the time of diagnosis
| n (%) | |
| Interval CRC tumor site | |
| Appendix and caecum | 5 (27.8) |
| Ascending | 0 (0) |
| Hepatic flexure | 1 (5.6) |
| Transverse | 1 (5.6) |
| Splenic flexure | 0 (0) |
| Descending | 2 (11.1) |
| Sigmoid | 7 (38.8) |
| Rectum | 2 (11.1) |
| Unknown | 0 (0) |
| Polyp found on the Screening colonoscopy | |
| Yes | 10 (61.1) |
| No | 8 (38.9) |
| Polyp frequency | |
| Median (IQR) | 2.0 (1.0-3.5) |
| Range | 1-6 |
| Previous resection in the same location | |
| Yes | 2 (11.0) |
| No | 16 (89.0) |
| Report of incomplete Screening colonoscopy | |
| Yes2 | 3 (16.7) |
| No | 15 (83.3) |
| Polyp size on the Screening colonoscopy | |
| ≥ 10 mm | |
| Yes | 2 (11.1) |
| No | 16 (88.9) |
| Polyp histology (n = 10) | |
| Hyperplastic polyp | 0 (0) |
| LRA | 6 (60.0) |
| AA | 4 (40.0) |
| Bowel preparation | |
| Inadequate | 2 (11.1) |
| Adequate1 | 12 (66.7) |
| Unknown | 4 (22.2) |
| Diverticulosis | |
| Yes | 5 (27.8) |
| No | 13 (72.2) |
1
Boston scale ≥ 7;
2
Complementary radiological test (Barium Enema or Computerized Tomography) was performed after colonoscopy. AA: Advanced adenoma; LRA: Low risk adenoma; CRC: Colorectal cancer; IQR: Interquartile range.