TABLE 2.
Clinicopathologic Features of Patients Who Received Various Adjuvant Treatments After Resection of Pancreatic Cancer
| Variable | Total | None | RT | Chemo | RT-chemo | Chemo-RT | P Value |
|---|---|---|---|---|---|---|---|
| Median survival (m) | 22.1 | 18.9 | 10.0 | 30.3 | 22.2 | 36.4 | <0.001 |
| Median Follow-up (m) | 42.9 | 41.6 | 51.5 | 40.8 | 43.0 | 46.4 | <0.001 |
| Grade | |||||||
| 1 | 1677 (10.3%) | 680 (12.13%) | 18 (13.43%) | 520 (8.75%) | 35 (12.59%) | 424 (9.87%) | <0.001 |
| 2 | 8359 (51.4%) | 2793 (49.81%) | 66 (49.25%) | 3085 (51.88%) | 131 (47.12%) | 2284 (53.18%) | |
| 3 | 5995 (36.9%) | 2044 (36.45%) | 48 (35.82%) | 2254 (37.91%) | 108 (38.85%) | 1541 (35.88%) | |
| 4 | 229 (1.4%) | 90 (1.61%) | 2 (1.49%) | 87 (1.46%) | 4 (1.44%) | 46 (1.07%) | |
| Stage | |||||||
| 1 | 2011 (12.0%) | 1059 (18%) | 14 (9.66%) | 623 (10.56%) | 16 (5.5%) | 299 (6.66%) | <0.001 |
| 2 | 14145 (84.7%) | 4634 (78.76%) | 122 (84.14%) | 5108 (86.56%) | 263 (90.38%) | 4018 (89.53%) | |
| 3 | 553 (3.3%) | 191 (3.25%) | 9 (6.21%) | 170 (2.88%) | 12 (4.12%) | 171 (3.81%) | |
| Nodes | |||||||
| Negative | 5301 (32.6%) | 2268 (40.11%) | 48 (34.29%) | 1777 (30.75%) | 72 (25.71%) | 1136 (25.73%) | <0.001 |
| Positive | 10,967 (67.4%) | 3386 (59.89%) | 92 (65.71%) | 4002 (69.25%) | 208 (74.29%) | 3279 (74.27%) | |
| Lymph node ratio | 0.170.20 | 0.160.21 | 0.160.19 | 0.170.20 | 0.200.21 | 0.180.21 | <0.001 |
| LVI | |||||||
| No | 7117 (49.0%) | 2750 (53.6%) | 64 (56.14%) | 2362 (45.91%) | 123 (47.67%) | 1818 (46.98%) | <0.001 |
| Yes | 7401 (51.0%) | 2381 (46.4%) | 50 (43.86%) | 2783 (54.09%) | 135 (52.33%) | 2052 (53.02%) | |
| Tumor size | 35.5±32.7 | 35.8±34.6 | 35.3±15.8 | 35.0±29.2 | 37.0±22.8 | 35.7±35.5 | 0.59 |
| T | |||||||
| 1 | 975 (6.0%) | 495 (8.58%) | 8 (5.63%) | 327 (5.61%) | 11 (3.86%) | 134 (3.03%) | <0.001 |
| 2 | 2003 (12.3%) | 825 (14.3%) | 14 (9.86%) | 674 (11.56%) | 20 (7.02%) | 470 (10.63%) | |
| 3 | 12,918 (79.3%) | 4223 (73.18%) | 110 (77.46%) | 4671 (80.12%) | 248 (87.02%) | 3666 (82.88%) | |
| 4 | 385 (2.7%) | 135 (2.34%) | 7 (4.93%) | 108 (1.85%) | 6 (2.11%) | 129 (2.92%) | |
| Margin | |||||||
| No | 12,568 (76.6%) | 4496 (77.83%) | 88 (63.31%) | 4707 (81.25%) | 177 (62.11%) | 3100 (70.15%) | <0.001 |
| Yes | 3845 (23.4%) | 1281 (22.17%) | 51 (36.69%) | 1086 (18.75%) | 108 (37.89%) | 1319 (29.85%) | |
All the treatments are in the adjuvant setting.
Chemo indicates chemotherapy; Chemo-RT, chemotherapy followed by radiation; LVI, lymphovascular invasion; XRT, radiation; RT-Chemo, radiation followed by chemotherapy