Hidden pain in the lower left abdomen colonoscopy with polyps can remove the polyps. According to the different size of polyps, different surgical methods can be chosen. 1. Biopsy forceps removal: If the polyp is found during colonoscopy, the polyp is small and can be removed directly under the colonoscope with biopsy forceps. 2. Cold cutting: if the polyp is a little bit big and it is not good to remove it with biopsy forceps, you can choose to use the cold cutting of the loop device, which can directly remove the polyp from the root. 3. Endoscopic mucosal resection: If the polyp cannot be completely removed under the colonoscope, endoscopic mucosal resection can be chosen. By injecting saline under the mucosa, the polyp will be lifted up, and then the polyp will be completely removed by electrocoagulation and electrocision. 4. Surgery: If the polyp appears cancerous under colonoscopy and invades the submucosa as well as reaches the muscular layer, surgery is needed to remove the polyp, such as laparoscopic polypectomy. Lower left abdominal pain with polyps, should be timely medical treatment, choose the appropriate treatment.