If the abdominal pain involves the back, it indicates that the mesentery is stretched, which is more suggestive of strangulated intestinal obstruction. Intestinal obstruction due to masses of roundworm foreign bodies or fecal masses is no longer common. Cases of large gallstones entering the intestinal cavity through the gallbladder or the common bile duct-finger fistula, producing gallstone intestinal obstruction, have been reported. Adhesions and adhesion bands can cause intestinal folding and torsion and cause obstruction. Congenital adhesion bands are more common in pediatric patients; adhesions from abdominal surgery or intra-abdominal inflammation are the most common cause of intestinal obstruction in adults, but a few cases can be without a history of abdominal surgery and inflammation. Abdominal X-ray, abdominal arteriography, abdominal ultrasound, CT and magnetic resonance imaging can usually be done. Stenosis or obstruction at the opening of the gastrointestinal branch of the abdominal aorta is caused by atherosclerosis and arteritis. Most of the involved arteries occur in the superior mesenteric artery. After the patient eats, the blood flow and need of the intestine increases, resulting in relative ischemia, hypoxia, and spasm of the intestinal canal, producing significant abdominal colic.