Table II.
Surgical procedures and pathological parameters.
| Procedure/parameter | Laparoscopic (n=80) | Open surgery (n=80) | P-value |
|---|---|---|---|
| Procedures | |||
| Right hemicolectomy | 18 (22.5) | 21 (26.3) | 0.416 |
| Left hemicolectomy | 5 (6.3) | 12 (15.0) | |
| Sigmoid colectomy | 15 (18.8) | 14 (17.5) | |
| Low anterior resection | 35 (43.8) | 26 (32.5) | |
| Abdominoperineal resection | 5 (6.3) | 6 (7.5) | |
| Total colectomy | 2 (2.5) | 1 (1.3) | |
| Conversion to open surgery | 1 (1.3) | - | |
| Tumor size, cm | 4.87±0.21 | 5.24±0.24 | 0.251 |
| Proximal margin, cm | 11.04±2.2 | 11.12±2.7 | 0.721 |
| Distal margin, cm | 8.15±3.62 | 8.24±3.67 | 0.543 |
| Total sample length, cm | 24±5.76 | 25.19±5.91 | 0.522 |
| No. of lymph nodes sampled | 11.86±1.95 | 12.24±1.17 | 0.363 |
| Positive resection margin | 0 (0) | 0 (0) | |
| TNM stage | 0.715 | ||
| I | 16 (20.0) | 15 (18.8) | |
| IIA | 12 (15.0) | 14 (17.5) | |
| IIB | 17 (21.3) | 16 (20.0) | |
| IIC | 2 (2.5) | 3 (3.8) | |
| IIIA | 2 (2.5) | 5 (6.3) | |
| IIIB | 22 (27.5) | 20 (25.0) | |
| IIIC | 9 (11.3) | 7 (8.8) | |
Data are expressed as the number (%) or mean ± standard deviation values. TNM, tumor node metastasis.