Table 1 .
Clinical characteristics of the study patients (N = 423)
| Characteristic | N (%) |
|---|---|
| Sex | |
| Male | 280 (66) |
| Female | 143 (34) |
| Age | |
| > 65 | 191 (45) |
| ≤ 65 | 232 (55) |
| Tested tumor specimen | |
| Resection | 152 (36) |
| Biopsy | 271 (64) |
| Stage | |
| Metastasis | 221 (52) |
| Recurrence after resection | 108 (26) |
| Locally advanced | 94 (22) |
| Differentiation | |
| Poorly differentiated | 75 (18) |
| Moderate/well differentiated | 166 (39) |
| Unknown | 182 (43) |
| Primary site | |
| ICC | 272 (64) |
| ECC | |
| PCC | 83 (20) |
| DCC | 20 (5) |
| GBC | 43 (10) |
| AC | 5 (1) |
ICC intrahepatic cholangiocarcinoma, ECC extrahepatic cholangiocarcinoma, PCC perihilar cholangiocarcinoma, DCC distal cholangiocarcinoma, GBC gallbladder carcinoma, AC ampullary carcinoma