Table III.
Comparison of the laparoscopic and open group. Results of the pathological examination
| Parameter | Laparoscopic | Open | Value of p | ||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Character of distal resection margin: | 0.23 | ||||
| Positive | 3 | 5.7 | 10 | 13.9 | |
| Negative | 50 | 94.3 | 62 | 86.1 | |
| Distance from distal resection margin to tumor [mm]: | 0.45 | ||||
| Mean | 20.7 | 24.2 | |||
| Median | 15 | 20 | |||
| Range | 0–60 | 0–99.9 | |||
| Circumferential margin [mm]: | 0.20 | ||||
| Mean | 7.2 | 6.2 | |||
| Median | 5 | 2.8 | |||
| Range | 0–40 | 0–45 | |||
| Character of circumferential margin: | 0.044 | ||||
| ≤ 1 mm | 11 | 20.8 | 27 | 37.5 | |
| > 1 mm | 42 | 79.2 | 45 | 62.5 | |
| Total mesorectal excision quality: | 0.085 | ||||
| Complete | 29 | 54.7 | 32 | 44.4 | |
| Nearly complete | 11 | 20.8 | 9 | 12.5 | |
| Incomplete | 13 | 24.5 | 31 | 43.1 | |
| pT stage | |||||
| Middle rectum: | 0.074 | ||||
| pT1 | 2 | 7.1 | 1 | 2.9 | |
| pT2 | 17 | 60.8 | 12 | 35.3 | |
| pT3 | 9 | 32.1 | 19 | 55.9 | |
| pT4 | 0 | 0 | 2 | 5.9 | |
| Low rectum: | 0.068 | ||||
| pT1 | 5 | 20.0 | 3 | 7.9 | |
| pT2 | 10 | 40.0 | 9 | 23.7 | |
| pT3 | 9 | 36.0 | 17 | 44.7 | |
| pT4 | 1 | 4.0 | 9 | 23.7 | |
| Number of harvested lymphatic nodes: | 0.26 | ||||
| Mean | 17.2 | 19.0 | |||
| Median | 14 | 16 | |||
| Range | 2–55 | 6–55 | |||
| pN stage: | 0.85 | ||||
| N0 | 31 | 58.5 | 44 | 61.1 | |
| N+ | 22 | 41.5 | 28 | 38.9 | |