Table 3.
Characteristics of colonic lesions resected surgically
| Number (%) | ||
|---|---|---|
| Location (n = 158) | • Appendix | 10 (6.3%) |
| • Cecum | 28 (17.7%) | |
| • Ascending colon | 26 (16.5%) | |
| • Hepatic flexure | 14 (8.9%) | |
| • Transverse colon | 13 (8.2%) | |
| • Splenic flexure | 3 (1.9%) | |
| • Descending colon | 9 (5.7%) | |
| • Sigmoid colon | 20 (12.7%) | |
| • Rectum | 35 (22.2%) | |
| Endoscopic resection attempt (n = 158) | • Surgery directly | 109 (68.9%) |
| • In baseline colonoscopy | 29 (18.4%) | |
| • In therapeutic colonoscopy | 20 (12.7%) | |
| Type of endoscopic resection (n = 153) | • No resection | 118 (74.7%) |
| • Incomplete resection | 32 (20.3%) | |
| • Piecemeal resection | 6 (3.8%) | |
| • En bloc resection | 2 (1.3%) | |
| Endoscopic size (mm) (n = 154) | 35 (25–50) | |
| Morphology (n = 155) | • Pedunculated | 11 (7.0%) |
| • Sessile | 70 (44.3%) | |
| • Flat | 17 (10.8%) | |
| • Flat-depressed | 6 (3.8%) | |
| • Laterally spreading tumor | 51 (32.3%) | |
| Endoscopic histology (n = 158) | • Tubular adenoma with LGD | 26 (16.4%) |
| • Villous adenoma with LGD | 51 (32.2%) | |
| • Adenoma with HGD | 42 (26.5%) | |
| • Adenoma with intramucosal carcinoma | 6 (3.8%) | |
| • Serrated lesion | 7 (4.4%) | |
| • Serrated lesion with HGD | 1 (0.6%) | |
| • Other histology | 1 (0.6%) | |
| • No biopsy | 24 (15.2%) | |
| SMSA classification (n = 150) | • 6–8 | 4 (2.7%) |
| • 9–12 | 31 (20.7%) | |
| • > 12 | 115 (76.7%) | |
| Surgical size (mm) (n = 136) | 25 (20–40) | |
|
Surgical histology (n = 158) |
• No residual lesion | 10 (6.3%) |
| • Tubular adenoma with LGD | 19 (12.0%) | |
| • Villous adenoma with LGD | 45 (28.5%) | |
| • Adenoma with HGD | 53 (33.5%) | |
| • Adenoma with intramucosal carcinoma | 12 (7.8%) | |
| • Serrated lesion | 9 (5.7%) | |
| • Serrated lesion with HGD | 4 (2.5%) | |
| • Other | 6 (3.8%) | |
HGD High grade dysplasia, LGD Low grade dysplasia, SMSA Size, Morphology, Site and Access