Intestinal atresia is a broad term used to describe a complete blockage or obstruction anywhere in the intestine.

Stenosis refers to a partial obstruction that results in a narrowing of the opening (lumen) of the intestine.

Though these conditions may involve any portion of the gastrointestinal tract, the small bowel is the most commonly affected portion.

The frequencies, symptoms and methods of diagnosis differ depending on the site of intestinal involvement. Nevertheless, children with all forms of intestinal atresia require surgical treatment.