A twisting in the intestine (INTESTINES) that can cause INTESTINAL OBSTRUCTION. The disease or phenotype is intestinal volvulus (EFO_1000989, an Experimental Factor Ontology id). Also known as: Intestinal Volvulus, Twist of intestine, bowel, or colon, Volvulus, Volvulus (& [torsion of bowel]), Volvulus NOS (disorder), intestinal volvulus (disorder).