Table 1.
Baseline clinicopathologic characteristics of 56 lesions in 54 patients who underwent ER for NADETs.
| Median age, years (range) | 51 (24–96) |
| Sex, n (%)a | |
| Male | 31 (57) |
| Female | 23 (43) |
| Tumor location, n (%) | |
| Bulb | 20 (36) |
| Second portion | 32 (57) |
| Third portion | 4 (7) |
| Macroscopic shape, n (%) | |
| Type I | 8 (14) |
| Type IIa | 37 (66) |
| Type IIb | 8 (14) |
| Type IIc | 3 (5) |
| Tumor size, n (%) | |
| <10 mm | 18 (32) |
| 10–19 mm | 24 (43) |
| 20–29 mm | 12 (21) |
| ≥30 mm | 2 (4) |
| Histopathology, n (%) | |
| Adenoma | 53 (95) |
| Low-grade dysplasia | 42 (75) |
| High-grade dysplasia | 11 (20) |
| Adenocarcinoma | 3 (5) |
| Resection method, n (%) | |
| Endoscopic mucosal resection | 41 (73) |
| Endoscopic submucosal dissection | 15 (27) |
a
One male and one female patient each had two tumors.