An 87-year-old man complaining of abdominal distention was referred to our hospital. Plain radiograph and enhanced computed tomography (CT) showed a dilated sigmoid colon with a coffee bean sign, leading to the diagnosis of sigmoid volvulus. Based on symptoms and the CT and laboratory test findings, we initially treated the patient with endoscopic reduction, resulting in successful reduction of the sigmoid volvulus with widespread presumed mucosal ischemia. Due both to the lack of emerging symptoms suggesting colon perforation and to the laboratory test findings after endoscopic reduction, we treated the patient without further urgent surgical intervention. Two months later, the patient underwent successful elective laparoscopic surgery with a redundant sigmoid colon resection and a functional end-to-end anastomosis. He has been well without any events for 20 months. Conservative treatment with careful observation should be taken into consideration in the treatment of sigmoid volvulus with mild to moderate ischemia after endoscopic reduction.

Keywords: Conservative treatment; Elective laparoscopic surgery; Sigmoid volvulus; Widespread ischemia.

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