Liquid gastrograffin was administered per rectally via a rectal tube with the balloon inflated. The procedure was uncomplicated.
Results:
Contrast filled and distended a normal appearing rectum. Tapering at the rectosigmoid junction with small amount of contrast slowly appearing 6cm proximal to this, suggesting a near complete mechanical stricture in the distal sigmoid, corresponding to the CT abnormality. Colon proximal to this not assessable.