Table 1.
Clinicopathological features of the included patients
|
LAPR |
OAPR (%) |
P value | |||
| Mean, n | SD (%) | Mean, n | SD (%) | ||
| Age (yr) | 58.01 | 11.64 | 56.78 | 12.28 | 0.454 |
| BMI | 23.13 | 3.01 | 22.97 | 2.85 | 0.690 |
| Gender | 0.583 | ||||
| Male | 55 | 51.9 | 51 | 48.1 | |
| Female | 51 | 48.1 | 55 | 51.9 | |
| ASA score | 0.783 | ||||
| I | 54 | 50.9 | 52 | 49.1 | |
| II | 51 | 48.1 | 53 | 50.0 | |
| III | 1 | 0.9 | 1 | 0.9 | |
| Neoadjuvant therapy | 1.000 | ||||
| No | 80 | 75.5 | 80 | 75.5 | |
| Yes | 26 | 24.5 | 26 | 24.5 | |
| Histology | 1.000 | ||||
| Adenocarcinoma | 97 | 91.5 | 98 | 92.5 | |
| Mucinous adenocarcinoma | 9 | 8.5 | 8 | 7.5 | |
| Pathological stage | 1.000 | ||||
| pCR | 2 | 1.9 | 3 | 2.8 | |
| I | 43 | 40.6 | 41 | 38.7 | |
| II | 24 | 22.6 | 24 | 22.6 | |
| III | 25 | 23.6 | 25 | 23.6 | |
| IV | 12 | 11.3 | 13 | 12.3 | |
| Lymphovascular invasion | 0.846 | ||||
| No | 91 | 85.8 | 90 | 84.9 | |
| Yes | 15 | 14.2 | 16 | 15.1 | |
| Perineural invasion | 0.366 | ||||
| No | 85 | 80.2 | 90 | 84.9 | |
| Yes | 21 | 19.8 | 16 | 15.1 | |
| Grade | 0.451 | ||||
| NA | 25 | 23.6 | 18 | 17.0 | |
| III/IV | 19 | 17.9 | 23 | 21.7 | |
| I/II | 62 | 58.5 | 65 | 61.3 | |
| pT category | 0.612 | ||||
| pT0 | 4 | 3.8 | 4 | 3.8 | |
| pT1 | 12 | 11.3 | 15 | 14.2 | |
| pT2 | 40 | 37.7 | 31 | 29.2 | |
| pT3 | 50 | 47.2 | 56 | 52.8 | |
| pN category | 0.543 | ||||
| pN0 | 74 | 69.8 | 70 | 66.0 | |
| pN1 | 23 | 21.7 | 22 | 20.8 | |
| pN2 | 9 | 8.5 | 14 | 13.2 | |
| Total examined nodes | 12.88 | 6.93 | 12.91 | 5.40 | 0.974 |
| Distance (cm) | 3.87 | 1.34 | 3.58 | 1.28 | 0.099 |
LAPR: Laparoscopic abdominoperineal resection; OAPR: Open abdominoperineal resection; BMI: Body mass index; ASA: American Society of Anesthesiologists; pCR: Pathological complete remission.