Colitis: Difference between revisions
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→Microscopic evaluation: Rectum |
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Have a high threshold for chronic colitis in the '''rectum''', as it often shows chronic changes even without any disease. | Have a high threshold for chronic colitis in the '''rectum''', as it often shows chronic changes even without any disease. | ||
===Special types=== | |||
In addition, look for the following types of colitis: | In addition, look for the following types of colitis: | ||
<gallery mode=packed heights=170> | <gallery mode=packed heights=170> | ||
File:Histopathology of lymphocytic colitis, high magnification.png|'''Lymphocytic colitis''', characterized by > 20 intraepithelial lymphocytes per 100 epithelial cells, away from lymphoid aggregates.<ref>{{cite web|url=https://www.pathologyoutlines.com/topic/colonlymphocytic.html|title=Lymphocytic colitis|author=Martha M. Yearsley, M.D.|website=Pathology Outlines}} Last author update: 28 July 2020</ref> | File:Histopathology of lymphocytic colitis, high magnification.png|'''Lymphocytic colitis''', characterized by > 20 intraepithelial lymphocytes per 100 epithelial cells, away from lymphoid aggregates.<ref>{{cite web|url=https://www.pathologyoutlines.com/topic/colonlymphocytic.html|title=Lymphocytic colitis|author=Martha M. Yearsley, M.D.|website=Pathology Outlines}} Last author update: 28 July 2020</ref> | ||
File:Histopathology of lymphocytic colitis, low magnification.png|'''Lymphocytic colitis''' also shows increased lymphocytes, plasma cells, eosinophils, and occasional neutrophils in lamina propria, but with preserved architecture | File:Histopathology of lymphocytic colitis, low magnification.png|'''Lymphocytic colitis''' generally also shows increased lymphocytes, plasma cells, eosinophils, and occasional neutrophils in lamina propria, but with preserved architecture | ||
File:Histopathology of collagenous colitis.jpg|'''Collagenous colitis''', with a thickened subepithelial collagen band that is typically more than 10 μm in thickness.<ref>{{cite web|url=https://www.pathologyoutlines.com/topic/coloncollagenous.html|website=Pathology Outlines|title=Collagenous colitis|author=Benjamin J. Van Treeck, M.D., Catherine E. Hagen, M.D.}} Topic Completed: 3 August 2020. Minor changes: 29 September 2020</ref> | File:Histopathology of collagenous colitis.jpg|'''Collagenous colitis''', with a thickened subepithelial collagen band that is typically more than 10 μm in thickness.<ref>{{cite web|url=https://www.pathologyoutlines.com/topic/coloncollagenous.html|website=Pathology Outlines|title=Collagenous colitis|author=Benjamin J. Van Treeck, M.D., Catherine E. Hagen, M.D.}} Topic Completed: 3 August 2020. Minor changes: 29 September 2020</ref> | ||
File:Histology of a normal colonic mucosal epithelium.jpg|Compare to normal colonic mucosa, which can have a band of basal epithelial cytoplasm. | File:Histology of a normal colonic mucosal epithelium.jpg|Compare to normal colonic mucosa, which can have a band of basal epithelial cytoplasm. | ||