noun
ileitis
Medical term for inflammation of the ileum, the final section of the small intestine.
回腸炎はクローン病の一症状として現れることがある。
Ileitis can appear as a symptom of Crohn's disease.
腸炎 (enteritis) is a more general term for intestinal inflammation; 回腸炎 specifies the ileum.
Compound of 回腸 (かいちょう, 'ileum') and 炎 (えん, 'inflammation').