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Colitis

Friday 3 October 2003

Images

- Pseudomembranous Colitis, Colectomy Specimen by Ed Euthman

Lesional patterns

- acute colitis

  • pseudomembranous 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

  • Crohn colitis
  • ulcerative 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

  • pancolitis

References

- Biopsy diagnosis of colitis: possibilities and pitfalls. Tsang P, Rotterdam H. Am J Surg Pathol. 1999 Apr;23(4):423-30. PMID: 10199471

- Ulcerative colitis: patterns of involvement in colorectal biopsies and changes with time. Kleer CG, Appelman HD. Am J Surg Pathol. 1998 Aug;22(8):983-9. PMID: 9706978

Portfolio

  • Diffuse colitis