Abstract
This case report presents a valuable instance of post-electrocoagulation syndrome (PECS) following argon plasma coagulation (APC) for angiodysplasia in the ascending colon. A 66-year-old male with decompensated liver cirrhosis and chronic kidney disease underwent APC to treat bleeding. Although the immediate outcomes were satisfactory, he developed localized abdominal pain and fever approximately eight hours after the procedure. Subsequent computed tomography and colonoscopy confirmed PECS without perforation. The patient's condition improved with conservative management. This case underscores the importance of recognizing PECS as a potential complication of APC, emphasizing the need for careful monitoring and appropriate intervention in clinical practice. These findings offer further clinical insight.