Treatment of pneumoperitoneum, as a result of colonoscopic perforation in a young patient is:

Risk Associated With Colonoscopy Risks of Colonoscopy: Perforation and hemorrhage MC site of bleeding after colonoscopy: Stalk after polypectomy MC site of perforation during colonoscopy: Sigmoid colon Perforation can be used by excessive air pressure, tearing of the antimesenteric border of the colon from excessive pressure on colonic loops, and at the sites of electrosurgical applications Management: Patients with perforation but no peritoneal signs can be safely managed with careful monitoring (Bowel rest + Broad spectrum antibiotics + Close observation) A large perforation recognized during the procedure requires surgical exploration. Because the bowel has almost always been prepared prior to the colonoscopy, there is usually little contamination associated with these injuries and most can be reapired primarily Ref: Shackelford 7th edition pgno: 1747