Table III.
Postoperative pathologic outcomes
| Parameter | SPORS (n = 36) | Multi-port LS (n = 61) | P-value |
|---|---|---|---|
| T stage, n (%): | 0.557 | ||
| T0 | 1 (2.8) | 0 (0) | |
| T1 | 12 (3336) | 15 (24.6) | |
| T2 | 6 (16.7) | 10 (16.4) | |
| T3 | 13 (36.1) | 29 (47.5) | |
| T4 | 4 (11.1) | 7 (11.5) | |
| N stage, n (%): | 0.197 | ||
| N0 | 26 (72.2) | 36 (59.0) | |
| N1 | 8 (22.2) | 14 (23.0) | |
| N2 | 2 (5.6) | 11 (18.0) | |
| Histology, n (%): | 0.286 | ||
| Well differentiated | 5 (13.9) | 8 (13.1) | |
| Moderate differentiated | 31 (86.1) | 47 (77.0) | |
| Poorly differentiated | 0 (0) | 4 (6.6) | |
| Mucinous | 0 (0) | 2 (3.3) | |
| Lymphovascular invasion, n (%) | 10 (27.8) | 23 (37.7) | 0.319 |
| Perineural invasion, n (%) | 8 (22.2) | 11 (18.0) | 0.615 |
| Tumor size [cm], median (IQR) | 4.0 (1.3–6.0) | 4.0 (2.0–7.0) | 0.128 |
| Retrieved LNs, median (IQR) | 15 (12–25) | 18 (13–23) | 0.743 |
| PRM [cm], median (IQR) | 6.5 (5.0–9.2) | 6.2 (5.0–9.9) | 0.367 |
| DRM [cm], median (IQR) | 4.0 (1.6–6.0) | 3.7 (2.4–5.0) | 0.317 |
| Adjuvant chemotherapy, n (%) | 19 (52.8) | 30 (49.2) | 0.732 |
SPORS – single plus one-port robotic surgery, LS – laparoscopic surgery, IQR – interquartile range, LNs – lymph nodes, PRM – proximal resection margin, DRM – distal resection margin.