Table 2 Comparison of clinicopathological factors and recurrence sites in R0 and R1 cases
Variables | R0 (n = 75) | R1 (n = 26) | p-value |
|---|---|---|---|
CEA (ng/mL), median (range) | 3.2 (1.2–14.4) | 4.0 (1.6–11.9) | 0.099 |
CA19-9 (U/mL), median (range) | 48.4 (1.0–4815.2) | 58.2 (10.8–1253.5) | 0.255 |
Gross type (Papillary) | 20 (26.7) | 2 (7.7) | 0.034 |
Primary tumour size (mm), median (range) | 20 (1–70) | 31 (7–90) | 0.001 |
Pancreatic invasion (positive) | 34 (45.3) | 18 (69.2) | 0.030 |
Duodenal invasion (positive) | 11 (14.7) | 6 (23.1) | 0.242 |
Portal vein invasion (positive) | 0 | 4 (15.4) | 0.004 |
Lymphovessel invasion (positive) | 54 (72.0) | 19 (73.1) | 0.566 |
Vascular invasion (positive) | 43 (57.3) | 18 (69.2) | 0.202 |
Perineural invasion (positive) | 55 (73.3) | 25 (96.2) | 0.009 |
pT3 | 36 (48.0) | 23 (88.5) | < 0.001 |
pN1 | 21 (28.0) | 11 (44.0) | 0.135 |
Tumour differentiation (Well) | 44 (58.7) | 15 (57.7) | 0.555 |
Recurrence site | |||
 Local | 7 (9.3) | 11 (42.3) | < 0.001 |
 Liver | 12 (16.0) | 3 (11.5) | 0.423 |
 Lung | 3 (4.0) | 1 (3.8) | 0.728 |
 Peritoneum | 3 (4.0) | 2 (7.7) | 0.383 |
 Lymph node | 2 (2.7) | 0 | 0.550 |
 Multiple | 5 (6.7) | 3 (11.5) | 0.344 |