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Uptodate Reference Title
Sigmoid volvulus
Sigmoid volvulus
Plain abdominal radiograph of a patient with a sigmoid volvulus demonstrates a large air-filled sigmoid colon (arrow) extending from the pelvis to the right upper quadrant and the absence of air in the rectum (arrow).
Courtesy of Mukesh Harisinghani, MD, Department of Radiology, Massachusetts General Hospital, Boston, MA.
