Occasionally, a patient may have a narrowing in the esophagus that can be from birth or acquired later in life. This narrowing can cause a blockage to food as it passes through the esophagus (a symptom called dysphagia). Your doctor can use a balloon or similar device during the endoscopy to dilate or stretch this area to improve symptoms.
Dilation is used in conditions that cause a narrowing or blockage in the esophagus. These conditions include strictures, rings, webs, or tumors.