Table 1.
Patient Characteristics
| Characteristics | No. (%) |
|---|---|
| Age, yr | |
| <65 | 71 (40.6) |
| ≥65 | 104 (59.4) |
| Sex | |
| Male | 104 (59.4) |
| Female | 71 (40.6) |
| Tumor location | |
| Head | 119 (68.0) |
| Body/tail/others | 56 (32.0) |
| Median tumor size, cm | |
| <3 | 75 (42.9) |
| ≥3 | 100 (57.1) |
| Lymph node involvement | |
| Absent | 65 (37.1) |
| Present | 110 (62.9) |
| Histology (differentiation) | |
| Well | 18 (10.3) |
| Moderate | 138 (78.9) |
| Poor | 19 (10.8) |
| Angiolymphatic invasion | |
| Absent | 75 (42.9) |
| Present | 100 (57.1) |
| Venous invasion | |
| Absent | 95 (54.3) |
| Present | 80 (45.7) |
| Perineural invasion | |
| Absent | 22 (12.6) |
| Present | 153 (87.4) |
| Resection margin | |
| R0 | 140 (80.0) |
| R1 | 35 (20.0) |
| Median preoperative CA19-9, U/mL | |
| <128 | 87 (49.7) |
| ≥128 | 88 (50.3) |
| Adequate adjuvant therapy | |
| Yes | 67 (38.3) |
| No | 108 (61.7) |
R0, no residual tumor; R1, microscopic residual tumor (corresponds to positive resection margins); CA19-9, carbohydrate antigen 19-9.