The causes of intestinal obstruction include factors external to the intestine and those originating from the intestine itself. External factors are mainly adhesions and bands of adhesions that cause intussusception or volvulus, thereby leading to intestinal obstruction. Congenital adhesive bands are common in children. Adhesions resulting from abdominal surgery or intra-abdominal inflammatory lesions are the most common causes of adult intestinal obstruction, although a minority of patients may have no history of abdominal surgery or inflammation. Additionally, incarcerated external or internal hernias may also cause intestinal obstruction. Furthermore, tumors external to the intestine or abdominal compression can also lead to obstruction.