Table 2:
Polyp Characteristics at Resection
| Study Group | CTC Surveillance | Immediate Polypectomy | Positive at Follow-up Screen | |||
|---|---|---|---|---|---|---|
| Resected Polyps (N) | 286 | 375 | 188 | |||
| Morphology at Final CTC | N | % | N | % | N | % |
| Sessile | 187 | 57.8 | 277 | 73.6 | 123 | 60.1 |
| Flat | 67 | 19.5 | 71 | 18.8 | 51 | 32.4 |
| Pedunculated | 18 | 4.8 | 27 | 7.6 | 14 | 7.4 |
| Diminutive (<6 mm) | 14 | 8.9 | 0 | 0 | 0 | 0 |
| Histopathology | N | % | N | % | N | % |
| Adenocarcinoma | 2 | 0.5 | 0 | 0 | 0 | 0 |
| Tubulovillous adenoma (TVA) | 28* | 9.3 | 7 | 1.9 | 17 | 9.0 |
| Tubular adenoma (TA) | 160* | 57.1 | 209 | 55.7 | 96 | 51.1 |
| Sessile serrated polyp (SSP) | 51 | 15.6 | 31 | 8.3 | 38 | 20.2 |
| Traditional serrated adenoma (TSA) | 2 | 0.5 | 0 | 0 | 0 | 0 |
| Hyperplastic | 38 | 11.7 | 61 | 16.3 | 21 | 11.2 |
| Other benign non-neoplastic | 5 | 2.4 | 60 | 16.0 | 16 | 8.5 |
| Not retrieved | 0 | 2.9 | 7 | 1.9 | 0 | 0 |
*
One tubulovillous adenoma and one tubular adenoma in the CTC surveillance group harbored high-grade dysplasia