Positron Emission Tomography (PET) Interest in the Follow Up of Colorectal Cancer Stage II and III

Inclusion Criteria: * Signed and dated written informed consent * Confirmed stage II or III (TNM) * Patient with curative surgery for colorectal adenocarcinoma * Total digestive endoscopy prior or post surgery. * Age \> 18 years old * Normal liver ultrasound and chest X-ray or thoraco-abdomino pelvic computed tomography (CT) scan. * In fertile women, efficient contraception or postmenopausal patient (amenorrhea for at least 1 year) Exclusion Criteria: * Serious concomitant pathology * Uncontrolled diabetes with a classical treatment (glycaemia \>1.4 g/l) * Other malignant tumour within the last 5 years (except for curatively treated basocellular carcinoma of the skin or in situ cervical carcinoma). * Uncontrolled infection * Women who are pregnant or lactating * Inability to understand informed consent * Psychological or geographic impossibility to follow up for three years.