Mean of operation time was 144.3 ± 3.7 minutes (90 - 240 minutes); mean of blood loss was 24.5 ± 1.5 ml (10 - 60 ml); average resected lymph nodes was 12.4 ± 2.8 (6 - 43); the more tumor invasive of the wall of intestine, the higher lymph node metastasis, 13.3% T1 - 2 with lymph node metastasis; 37.5% T3 with lymph node metastasis and 60% T4 with lymph node metastasis (p < 0.05).