Gastroduodenal Intussusception Due to Gastric Mucosal Prolapse Polyp in a 2-Year-Old Child.

Gastroduodenal intussusception is an invagination of a portion of the stomach into the duodenum. It predominately occurs in adults. We present a gastroduodenal intussusception in an hypochromic microcytic anemic 2-year-old girl. A large filling defect in the second and third parts of the duodenum, indenting the pyloric antrum, was due to a gastroduodenal intussusception secondary to a cauliflower-like gastric mucosal prolapse polyp, a type of gastric hyperplastic polyp. Anemia may accompany a gastric mucosal prolapse polyp.