Upper endoscopy enables the physician to look inside the esophagus, stomach, and duodenum (first part of the small intestine).
A colonoscopy allows a doctor to look inside the entire large intestine. The procedure enables the physician to see and possibly remove things.
Strictures in the esophagus can occur from a variety of conditions including GERD, surgery, motility disorders, or cancer which may cause difficulty in swallowing.
Flexible Sigmoidoscopy (SIG-moy-DAH-skuh-pee) enables the physician to look at the inside of the large intestine from the rectum through the last part of the colon.
Capsule endoscopy is a procedure designed to help your physician see what is happening inside parts of your gastrointestinal (GI) tract.