Answer:
This procedure is used to stretch out an area of the esophagus that is narrowed or blocked to allow better swallowing.
A small balloon-like device or a device shaped like a pipe is passed down the throat and pushed through the narrowed area to stretch it out. This can be repeated if needed. Before the procedure, your doctor may give you a sedative to help you relax and may numb your throat by spraying it with a local anesthetic.
There is a small risk of bleeding or tearing a hole in the esophagus (called a perforation) with this procedure, which could require surgery or other treatments to fix. The esophagus typically stays open only a few weeks after dilation, so this is often followed by other treatments (such as placing an expandable stent) to help keep the esophagus open.