page_title: Intestinal atresia
section_title: Classification
hierarchical_section_title: Intestinal atresia / Diagnosis / Classification
context_page_description: Intestinal atresia is any congenital malformation of the structure of the intestine that causes bowel obstruction. The malformation can be a narrowing, absence or malrotation of a portion of the intestine. These defects can either occur in the small or large intestine.
caption: Sites of small bowel atresia: duodenum, jejunum and ileum
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