A volvulus is an abnormal twisting of part of the large or small intestine. It can stem from problems with the structure of the colon, constipation, and other health issues. It is a medical emergency ...

Dear Dr. Roach: This past weekend, during my son’s wedding festivities, I experienced a sigmoid volvulus. Doctors recommended surgery, but I opted for a colonoscopy, which was performed successfully.

THE incidence of sigmoidal volvulus in the United States is so low that few surgeons acquire great experience in dealing with it. It is reported by most authors as ranging between 1 and 4 per cent of ...