The small intestine is the middle portion of the digestive system. In the past, the small intestine was not able to be examined with a scope. New technology involving a much longer scope “an enteroscope” now allows for examination of some of the small intestine. In addition, the use of a balloon assisted procedure known as “single balloon enteroscopy” allows for even more of the small intestine to be evaluated. Balloon enteroscopy is frequently used to follow up results of preliminary testing such as x-rays and capsule endoscopy.