Abstract
We report a rare case of cervical subcutaneous emphysema that developed after endoscopic mucosal resection (EMR). A 60 year-old-man who had undergone EMR was referred to our hospital because of neck pain and abdominal swelling. EMR had been performed to treat transverse colonic and rectal polyps on the same day. On physical examination, the patient's abdomen was diffusely distended and tender. Computed tomography revealed cervical subcutaneous emphysema, retroperitoneal emphysema, pneumoscrotum, and peritoneal emphysema. Emergency surgery was performed for a diagnosis of iatrogenic colon perforation. Intraoperative examination and colonoscopy revealed a pinhole perforation in the transverse colon near the hepatic flexure, with no ascites. The perforation site was repaired with simple closure. The patient recovered uneventfully.
