<unk>  in adults and children is most commonly caused by surgery (intestinal resection). In those who undergo intestinal resection, approximately 15% eventually develop small bowel syndrome (75% of those due to 1 large resection and 25% due to multiple separate intestinal resections). This surgery may be done for: * Crohn's disease, an inflammatory disorder of the digestive tract * Mesenteric ischemia, embolic or thrombotic events that may occur in the arteries or veins that supply or drain the intestines respectively, leading to disruption of blood supply to the intestines and ischemia. * Volvulus, a twisting of the small intestine often caused by intestinal malrotation that quickly cuts off blood supply and leads to tissue death * Tumors of the small intestine * Radiation enteropathy, radiation injury to the small intestine, due to radiation therapy for cancer * Injury or trauma to the small intestine * Necrotizing enterocolitis (premature newborn) * Bypass surgery to treat obesity * Surgery to remove diseases or damaged portion of the small intestine Some children are also born with an abnormally<unk>  small intestine, known as congenital<unk>  bowel. Surgical complications, requiring re-surgery, are a common cause of small bowel syndrome, contributing up to 50% of cases based on some estimates. These surgical complications include internal hernias, volvuli, ischemia or profound hypotension.
Short bowel syndrome
Gay bowel syndrome
Distal intestinal obstruction syndrome
Ileus
Intestinal pseudo-obstruction
Functional constipation
Wilderness-acquired diarrhea
Fecal impaction