Table 2.
Clinicopathological characteristics of resected colorectal lesions
| Variables | OSK group (n = 28) | CK group (n = 25) | P value |
|---|---|---|---|
| Histopathologic diagnosis, n (%) | 0.997 | ||
| Adenoma | 10 (35.8%) | 10 (40.0%) | |
| Adenoma with HGD | 7 (25.0%) | 6 (24.0%) | |
| Intramucosal adenocarcinoma | 6 (21.4%) | 5 (20.0%) | |
| Adenocarcinoma with WD | 1 (3.6%) | 1 (4.0%) | |
| Adenocarcinoma with MD | 2 (7.1%) | 1 (4.0%) | |
| NET | 2 (7.1%) | 2 (8.0%) | |
| Tumor location, n (%) | 0.930 | ||
| Ascending colon | 6 (21.4%) | 8 (32.0%) | |
| Hepatic flexure | 1 (3.6%) | 1 (4.0%) | |
| Transverse colon | 4 (14.3%) | 3 (12.0%) | |
| Descending colon | 3 (10.7%) | 2 (8.0%) | |
| Sigmoid colon | 1 (3.6%) | 2 (8.0%) | |
| Rectum | 13 (46.4%) | 9 (36.0%) | |
| Tumor morphology | 0.857 | ||
| Non-LST | 5 (17.9%) | 4 (16%) | |
| LST | 23 (82.1%) | 21 (84%) | |
| Homogenous | 3 | 3 | |
| Nodular mixed | 10 | 7 | |
| Flat elevated | 9 | 8 | |
| Pseudodepressed | 1 | 3 | |
| Size of resected specimen, median [IQR], mm | 22 [17.3–30.0] | 24 [17.0–32.5] | 0.681 |
| Size of lesion, median [IQR], mm | 18.5 [15.0–25.0] | 20 [13.0–27.0] | 0.929 |
OSK one-step knife, CK conventional knife, HGD high-grade dysplasia, WD well-differentiated, MD moderately differentiated, NET neuroendocrine tumor, LST laterally spreading tumor, IQR interquartile range