<unk>  is an inflammation of the ileum, a portion of the small intestine. Crohn's<unk>  is a type of Crohn's disease affecting the ileum.<unk>  is caused by the bacterium Lawsonia intracellularis. Inflammatory bowel disease does not associate with Lawsonia intracellularis infection.
Ileitis
Ileus
Enterocolitis
Gastroenterocolitis
Intestinal pseudo-obstruction
Proctocolitis
Ischemic colitis
Chemical colitis