TABLE 3.
Polyp Characteristics by Size
| Characteristic | All Polyps (n = 1473) | Small (6–9 mm) (n = 1035) | Large (≥ 10 mm) (n = 438) |
|---|---|---|---|
|
| |||
| Polyp morphologic features | |||
| Sessile | 946 (64.2) | 799 (77.2) | 147 (33.6) |
| Pedunculated | 244 (16.6) | 91 (8.8) | 153 (34.9) |
| Flat | 227 (15.4) | 145 (14.0) | 82 (18.7) |
| Mass (all) | 47 (3.2) | 0 (0.0) | 47 (10.7) |
| Mass (bulky or carpet) | 40 (2.7) | 0 (0.0) | 40 (9.1) |
| Mass (benign stricture) | 7 (0.5) | 0 (0.0) | 7 (1.6) |
| Submucosal or extrinsic | 9 (0.6) | 0 (0.0) | 9 (2.1) |
| Polyp location | |||
| Cecum | 166 (11.3) | 96 (9.3) | 70 (16.0) |
| Ascending colon | 291 (19.8) | 190 (18.4) | 101 (23.1) |
| Transverse colon | 212 (14.4) | 161 (15.6) | 51 (11.6) |
| Descending colon | 119 (8.1) | 88 (8.5) | 31 (7.1) |
| Sigmoid colon | 453 (30.8) | 334 (32.3) | 119 (27.2) |
| Rectum | 232 (15.8) | 166 (16.0) | 66 (15.1) |
| Diagnostic confidence | |||
| 3 (most) | 1165 (79.1) | 800 (77.3) | 365 (83.3) |
| 2 (somewhat) | 272 (18.5) | 211 (20.4) | 61 (13.9) |
| 1 (least) | 36 (2.4) | 24 (2.3) | 12 (2.7) |
Note—Data are no. (%) of polyps.