Final answer:
Intestinal atresia, also known as Annular Pancreas, is a condition associated with a blockage in the intestine. It is often seen in individuals with Down syndrome and can occur in the duodenum.
Step-by-step explanation:
Intestinal atresia, also known as Annular Pancreas, is a condition characterized by a complete or partial blockage of the intestine. It is often associated with Down syndrome, especially in cases involving the duodenum. Down syndrome is a genetic disorder caused by the presence of an extra chromosome 21, resulting in various physical and intellectual impairments. In the case of intestinal atresia, the blockage occurs in the duodenum and is often caused by a ring of pancreatic tissue wrapping around the intestine.