Characteristics of the six patients with colorectal cancer detected at follow up
| No 1 | No 2 | No 3 | No 4 | No 5 | No 6 | |
| Age at initial colonoscopy/ polypectomy (y) | 53 | 62 | 64 | 65 | 56 | 54 |
| Sex | M | M | M | M | F | F |
| Location of index adenoma | Sigmoid | Sigmoid | Descending | Sigmoid | Rectum | Sigmoid |
| Histological finding at index examination | Tubular adenoma | Tubulo-villous adenoma | Tubulo-villous adenoma | Tubulo-villous adenoma pedunculated | Tubulo-villous adenoma | Tubular adenoma |
| Size of index adenoma (mm) | 10 | 10 | 13 | 40 | 20 | 5 |
| Lesions at index examination | >1 | >1 | >1 | 1 | >1 | 1 |
| Grade of dysplasia of index adenoma | Not available | Moderate | Severe | Moderate | Severe | Severe |
| Time from index examination (y) | 7 | 10 | 8 | 5 | 5 | 2.5 |
| No TCEs after index examination | 0 | 0 | 0 | 4 | 1 | 3 |
| Location of cancer | Rectum | Transverse | Descending | Caecum | Rectum | Caecum |
| Current status | Alive | Alive | Alive | Died from colon cancer | Died from rectal cancer | Died from colon cancer |
2-150 TCE, total colon examination.