A 26-year-old female patient was referred to us from the psychiatric ward. The patient, who was known to have a borderline personality disorder, had swallowed two scalpels. An abdominal radiograph showed two adjacent, radiopaque foreign bodies in the shape of scalpel blades in the right mid abdomen. We decided at this stage on a conservative treatment approach conducted by clinical observation in the psychiatric ward. On the third day, the patient complained of diffuse pain of increasing

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... y in the abdomen and lack of appetite without vomiting. Clinical examination revealed moderate diffuse peritonitis accompanied by reduced and, in part, high-pitched bowl sounds. An abdominal radiograph with the patient standing revealed distal subileus of the small intestine with multiple smallintestinal air-fluid levels without dilation of the small intestine and without free intra-abdominal gas (• " Fig. 1) . We decided to try endoscopic removal of the foreign bodies. After oral intestinal lavage, an ileocolonoscopy using a standard colonoscope was performed with the patient lying on her left side. In addition, we used a mucosectomy attachment cap (16 mm diameter, effective asymmetric cap length 9 -14 mm). The two scalpel blades were inside the cecal pole (• " Fig. 2) . Using grasping forceps we were able to take hold of one of the blades at its sharp end. It was pulled back into the mucosectomy cap so that the sharp end was completely covered (• " Fig. 3, • " Video 1). The second blade was retrieved in the same way. A final thorough colonoscopy with a deep intubation into the terminal ileum did not show any signs of mucosal injuries or irritation. The patient underwent normal observation in the recovery ward and was then transferred back to the psychiatric ward without any complaints.