Table 2.
Pathologic features and operative outcomes of study cohorts.
| Total N = 168 |
SBRT N = 61 |
CRT N = 107 |
P | |
|---|---|---|---|---|
| R0 resection | 135 (80.4%) | 51 (84%) | 84 (78.5%) | .423 |
| Tumor size median (IQR), cm | 2.4 (1.2–3.4) | 1.9 (0.9–3.3) | 2.5 (1.5–3.4) | .169 |
| Complete response | 14 (8.3%) | 7 (12%) | 7 (7%) | .384 |
| T0: complete response | 14 (8.3%) | 7 (12%) | 7 (6.6%) | .179 |
| T1 | 46 (27.4%) | 21 (34%) | 25 (23.4%) | |
| T2 | 51 (30.4%) | 19 (31%) | 32 (29.9%) | |
| T3 | 48 (28.6%) | 12 (20%) | 36 (33.6%) | |
| T4 | 9 (5.4%) | 2 | 7 (65%) | |
| Harvested lymph nodes, median (IQR) | 16 (12–23) | 19 (15–23) | 15 (12–20) | .011 |
| Lymph node positivity | ||||
| 0 nodes | 116 (69%) | 43 (70%) | 73 (68.2%) | .242 |
| 1–3 nodes | 46 (27.4%) | 14 (23%) | 32 (29.9%) | |
| 4 + nodes | 6 (3.6%) | 4 (7%) | 2 (1.9%) | |
| Perineural invasion | ||||
| Yes | 89 (53%) | 31 (51%) | 58 (54.2%) | .774 |
| No | 73 (43.5%) | 27 (44%) | 46 (43%) | |
| Indeterminate | 6 (3.6%) | 3 (5%) | 3 (2.8%) | |
| Vascular invasion | ||||
| Yes | 44 (26.2%) | 15 (25%) | 29 (27.1%) | .879 |
| No | 97 (57.7%) | 37 (61%) | 60 (56%) | |
| Indeterminate | 26 (15.5%) | 9 (15%) | 17 (16.5%) | |
| Procedure type | ||||
| Pancreaticoduodenectomy | 121 (72%) | 41 (6%) | 80 (74.8%) | .255 |
| Distal pancreatectomy | 39 (23%) | 16 (26%) | 23 (21.5%) | |
| Total pancreatectomy | 8 (4.8%) | 4 (7%) | 4 (3.7%) | |
| Vascular resections | 73 (43.5%) | 33 (54%) | 40 (36.7%) | .027 |
| Complications | 125 (74%) | 46 (75%) | 79 (72%) | .628 |
| Clavien grade | ||||
| < III | 124 (74%) | 47 (77%) | 77 (72%) | .471 |
| ≥III | 44 (26%) | 14 (23%) | 30 (28%) | |
| 90-day mortality | 4 (2.3%) | 1 (2%) | 3 (2.8%) | .634 |