Abstract
Case : A 53-year-old man was referred to our hospital. His chief complaint was a 3-day history of epigastralgia. Emergency laparotomy revealed a perforated duodenal ulcer, also seen on CT. There was a 3.5cm perforation at the 1st portion of the duodenum. It was too large to close with omentum, and the jejunum could not be mobilized due to prolonged inflammation. Therefore, we used a gallbladder serosal patch to close the perforation. The patient was discharged without complications. A gallbladder serosal patch is a useful method of closing a perforated duodenal ulcer when the omentum or jejunum is not feasible.