Human pathology

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Colitis

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Diffuse colitis

Lesional patterns

- acute colitis
- active colitis

  • focal active colitis
  • diffuse active colitis

- chronic colitis

Etiology

- infectious colitis
- collagenous colitis
- allergic colitis
- eosinophilic colitis
- obstrucive colitis
- diversion colitis
- diverticular disease-associated chronic colitis
- diffuse colitis cystica profunda
- pseudomembranous collagenous colitis
- idiopathic inflammatory colitis

- acute radiation colitis
- ischemic colitis
- colitis of Behcet?s syndrome
- chronic granulomatous disease (colitis in chronic granulomatous disease)

Variants

- focal colitis

  • focal active colitis

- diffuse colitis