The doctor uses a flexible tube that is passed through the mouth, into the stomach and first part of the intestines to look for signs of swelling or irritation. The doctor may remove small pieces of tissue during this test (biopsy). The tissue is examined under a microscope and the findings help the doctor with their plan for treatment.
During esophageal dilatation, a specialist uses a balloon catheter to stretch (dilate) the narrow, injured part of the esophagus. With the use of fluoroscopy (moving X-ray), the doctor can locate the narrowing and open the area up with an inflated balloon catheter.