Standardization of Laparoscopic Surgery for Right Hemi Colon Cancer (SLRC)

Inclusion Criteria: 1. Patients suitable for curative surgery 18-75years old 2. Qualitative diagnosis: a pathological diagnosis of adenocarcinoma; 3. Localization diagnosis: the tumor located between the cecum and the right 1/3 of transverse colon; 4. Enhanced CT scan of chest, abdominal and pelvic cavity: assessment of tumor stage is T stage 1-4 and N stage 0-2; there is no distant metastasis. 5. Informed consent Exclusion Criteria: 1. Simultaneous or simultaneous multiple primary colorectal cancer; 2. Preoperative imaging examination results show: (1) Tumor involves the surrounding organs and combined organ resection need to be done; (2)distant metastasis; (3)unable to perform R0 resection; 3. History of any other malignant tumor in recent 5 years; 4. Patients need emergency operation; 5. Not suitable for laparoscopic surgery; 6. Women during Pregnancy or breast feeding period; 7. Informed consent refusal