Critères d'inclusion :
Age ≥ 75 years
Histologically proven colonic adenocarcinoma (> 15 cm from the anal margin) or precancerous colonic lesion non endoscopically resectable
Uncomplicated colonic tumor (no preoperative suspicion of invasion of adjacent structures as assessed by CT-scan (cT4), no tumoral perforation, or tumoral obstruction, or abscess, or hemorrhage)
No previous colonic cancer within the 5 last years
No peritoneal carcinosis on CT-scan
Patient able to fill in an auto-questionnaire alone or with some help
MMS (Mini Mental Score) ≥ 15
Given oral consent (formal informed consent is not required by French law for accepted procedures)
Critères de non-inclusion :
Rectal cancer (≤ 15 cm from the anal margin)
Locally advanced (cT4) or complicated tumor requiring extended resection or emergency surgery
Synchronous colonic cancer
- Scheduled need for synchronous intra-abdominal surgery, including surgery for liver metastases
Absolute contraindications to general anesthesia or prolonged pneumoperitoneum
Patient not able to tolerate colon surgery according to the global comprehensive geriatric assessment
Estimated life expectancy less than 6 months
Patient under guardianship
Other known active cancer (except nonmelanomatous skin cancer)
Patient not affiliated to the social security system
Previous colonic resection