ICD-11

Noninfectious enteritis and ulcer of small intestine is inflammation or tissue defect in the small intestine of non-infectious origin, usually due to medication including chemotherapy or radiation therapy side effects; or allergic or systemic disorders. Its severity may vary from mild and inconvenient to severe and life-threatening.

In CNSU patients chronic non-specific multiple ulcers are predominantly found in the ileum, which are circular or irregular in shape. The margins of ulcers are always clear and the intervening mucosa appears normal. CNSU is often characterised by anaemia and hypoalbuminemia due to bleeding and protein loss from multiple ulcers.