A<unk>  is a pouch on the wall of the lower part of the small bowel that is present at birth (congenital). The diverticulum may contain tissue from the stomach or pancreas.
Meckel's diverticulum
Duodenal diverticulum
Intussusception
Mirizzi's syndrome
Hartnup Disease
Pseudomembranous enterocolitis
Hirschsprung's disease
Vesicointestinal fistula