Chronic enteritis - Types

Classification of chronic enteritis (A. V. Frolkis, 1996, with amendments).

1. Etiology.
   1. Infectious.
   2. Parasitic.
   3. Toxic.
   4. Medicinal.
   5. Alimentary.
   6. Radiation.
   7. After operations on the small intestine.
   8. Congenital intestinal anomalies and enzymopathies.
   9. In case of insufficiency of the ileocecal valve and large duodenal papilla.
   10. Secondary (in other diseases).
2. Primary localization.
   1. Chronic jejunitis.
   2. Chronic ileitis.
   3. Chronic total enteritis.
3. The nature of morphological changes in the small intestine.
   1. Eunite without atrophy.
   2. Eunit with moderate partial villous atrophy.
   3. Eunit with subtotal villous atrophy.
4. Clinical course.
   1. Light flow.
   2. Moderate severity.
   3. Severe course.
5. Phase of the disease.
   1. Exacerbation phase.
   2. Remission phase.
6. The nature of functional disorders of the small intestine.
   1. Indigestion syndrome (maldigestion).
   2. Intestinal malabsorption syndrome (malabsorption).
   3. Exudative enteropathy syndrome.
   4. Multifunctional small intestinal failure syndrome (enteric failure).
7. Degree of colon involvement.
   1. Without concomitant colitis.
   2. With concomitant colitis.
8. Extraintestinal disorders.

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