Table 1. Patient demographic and pathological characteristics.
| Characteristics | All cases (n = 102) |
|---|---|
| Age (median) | 53 (30–76) |
| Sex (male:female) | 64:38 |
| Location | |
| upper | 5 |
| middle | 37 |
| lower | 60 |
| Tumor size (median) | 8 (3–35) |
| 0–10 mm | 56 |
| ≧10 mm | 46 |
| Multiple tumors | 4 |
| Preoperative treatment | |
| endoscopic resection | 66 |
| transanal resection | 2 |
| Tumor depth | |
| submucosa | 91 |
| mp∼ | 11 |
| Laparoscopic surgery | 97 |
| LPLD | 7 |
| Number of lymph nodes (median) | 11 (1–27) |
| pN0/pN1 | 65/37 |
| LPLN (+) | 6 |
| Lymphatic invasion (+) | 45 |
| unknown | 3 |
| Venous invasion (+) | 57 |
| unknown | 6 |
| Grade(G1/G2) | 75/18 |
| unknown | 9 |
| pStage I/IIA/IIB/IIIA/IIIB/IV | 62/2/1/0/34/3 |
| Distant metastasis | 3 |
| Recurrence | 3 |
※LPLN lateral pelvic lymph node dissection