Table 4.
Stratification analysis by tumor size.
| Variables | Size ≤ 2cm | Size > 2cm | ||||
|---|---|---|---|---|---|---|
| Protruding (n = 31) | Ulcerative (n = 10) | P-value | Protruding (n = 46) | Ulcerative (n = 38) | P-value | |
| Grade, n (%) | 0.007 | 0.06 | ||||
| G1 and G2 | 23 (74.2%) | 2 (20.0%) | 17 (37.0%) | 7 (18.4%) | ||
| G3 | 8 (25.8%) | 8 (80.0%) | 29 (63.0%) | 31 (81.6%) | ||
| Differentiation, n (%) | 0.001 | 0.19 | ||||
| NET | 26 (83.9%) | 2 (20.0%) | 21 (45.7%) | 12 (31.6%) | ||
| NEC | 5 (16.1%) | 8 (80.0%) | 25 (54.3%) | 26 (68.4%) | ||
| Ki-67 [median (IQR)] | 4.0% (2.0%, 10.0%) | 70.0% (35.0%, 80.0%) | 0.001 | 40.0% (5.0%, 62.5%) | 60.0% (23.8%, 80.0%) | 0.09 |
| T stage, n (%) | 0.02 | 0.79 | ||||
| T1, T2 | 24 (52.9%) | 3 (30.0%) | 7 (15.2%) | 5 (13.2%) | ||
| T3, T4 | 7 (47.1%) | 7 (70.0%) | 39 (84.8%) | 33 (86.8%) | ||
NET, neuroendocrine tumor; NEC, neuroendocrine carcinoma.