The small intestine is where the body's main digestion and absorption of food occurs. In the human body, the small intestine is located behind the stomach and before the large intestine (also called the colon). In adults, the length of this part ranges from 5-9m, about 1.5-3cm wide.

Small bowel tumors can block the flow of food and affect digestion. When the tumor is large, it can cause intestinal obstruction, causing the patient to have abdominal pain. In addition, the long-term tumor bleeding will cause anemia.

Intussusception is a serious surgical disease, almost exclusively found in children, especially children under 2 years old. Children who are too young and unable to talk are the most difficult in diagnosing and treating the disease.

Intussusception is a serious medical emergency in which part of the intestine slides into an adjacent part. This mass often blocks the passage of food and chokes off blood vessels, which can lead to gangrene and perforation of the intestine.

Intussusception once detected needs to be monitored and treated immediately. Intussusception under fluoroscopy is a method of intussusception in children that is often used with higher efficiency when compared to intussusception in adults. This method is less invasive and limits the intervention of a surgery on children.