No... There is often diffuse physiologic tracer uptake in the bowel on pet/ct. More focal tracer uptake can often be seen in the ileocecal region in normal patients. Focal uptake on FDG pet often raises the suspicion for malignancy but may also be benign. Correlation with the ct portion of the scan is very helpful. Colonoscopy allows the advantage of biopsy or removal of suspicious lesions.