Table 2.
Clinicopathologic features
| Characteristic | GB-adenocarcinoma (n = 38) | GB-NEC-SCC (n = 4) | P value |
| Sex | 1.000 | ||
| Male | 15 | 1 | |
| female | 23 | 3 | |
| Age, yr | 67.89 ± 11.15 | 55.75 ± 10.31 | 0.029 |
| Age groups, n | 0.080 | ||
| < 65 yr | 10 | 3 | |
| ≥ 65 yr | 28 | 1 | |
| Operation type, n | 1.000 | ||
| Simple cholecystectomy | 10 | 1 | |
| Extended cholecystectomy | 28 | 3 | |
| Tumor size, cm | 2.56 ± 1.75 | 3.98 ± 3.74 | 0.788 |
| Tumor size groups, n | 0.609 | ||
| < 2 cm | 11 | 2 | |
| ≥ 2 cm | 21 | 2 | |
| Tumor stage, n | 0.410 | ||
| T2 | 34 | 3 | |
| T3 | 4 | 1 | |
| Lymphovascular invasion, n | 0.245 | ||
| - | 29 | 2 | |
| + | 8 | 2 | |
| Perineural invasion, n | 0.107 | ||
| - | 26 | 1 | |
| + | 11 | 3 | |
| Lymph node metastasis, n | 0.537 | ||
| - | 18 | 1 | |
| + | 9 | 2 | |
| Lymph node ratio | 0.15 ± 0.29 | 0.18 ± 0.28 | 0.485 |
| Recurrence, n | 1.000 | ||
| - | 28 | 3 | |
| + | 10 | 1 |
GB: Gallbladder; GB-NEC-SCC: Small cell neuroendocrine carcinoma of the gallbladder.