| cases | 65 |
| sex (men/female) | 31/34 |
| age (mean) | 52-86 (69.0) |
| tumor-occupied site | |
| head | 39 |
| body-tail | 26 |
| operation | |
| pancreaticoduodenectomy | 38 (including 1 case for portal resection) |
| distal pancreatectomy | 25 (including 1 case for portal resection) |