What does the term “dilation” refer to in the context of endoscopic procedures?

In the context of endoscopic procedures, “dilation” specifically refers to the widening of a narrowed area of the gastrointestinal tract. This is a therapeutic intervention used when there is a stricture or narrowing that can cause obstruction or difficulty in the passage of food, fluids, or air through the digestive system.

During the procedure, specialized tools, such as balloon dilators, are used to enlarge the narrowed segment by applying pressure and stretching the tissues, thereby improving luminal diameter. This technique is commonly employed in various scenarios, including treating esophageal strictures, pyloric stenosis, or other types of gastrointestinal obstructions.

Understanding this definition is critical for recognizing how dilation plays a role in enhancing patient outcomes by relieving symptoms associated with narrow passages in the GI tract. Other terms related to endoscopy—while important—do not encompass the specific action of widening as dilation does.