Dilatation Esophageal stricture is a procedure that allows your doctor to dilate, or stretch, a narrowed area of your gullet. Doctors used many types techniques for this process. Benign esophageal stricture has a diameter of the esophagus is built up narrow by scar tissue. The coarsest cause of narrowing of the esophagus or constraint is scarring of the esophagus from reflux of abdomen acid occurring in patients with indigestion. Normally doctors used general anesthetic spray in this treatment.