Difference between revisions of "Colon"
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(→Rectal prolapse: small tweaks) |
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==Rectal prolapse== | ==Rectal prolapse== | ||
=== | ===General=== | ||
*Usually close to the anal verge. | *Usually close to the anal verge. | ||
*Rare forms can occasionally be confused with cancer.<ref name=pmid19861563>{{cite journal |author=Brosens LA, Montgomery EA, Bhagavan BS, Offerhaus GJ, Giardiello FM |title=Mucosal prolapse syndrome presenting as rectal polyposis |journal=J. Clin. Pathol. |volume=62 |issue=11 |pages=1034–6 |year=2009 |month=November |pmid=19861563 |pmc=2853932 |doi=10.1136/jcp.2009.067801 |url=}}</ref> | *Rare forms can occasionally be confused with [[colorectal carcinoma|cancer]].<ref name=pmid19861563>{{cite journal |author=Brosens LA, Montgomery EA, Bhagavan BS, Offerhaus GJ, Giardiello FM |title=Mucosal prolapse syndrome presenting as rectal polyposis |journal=J. Clin. Pathol. |volume=62 |issue=11 |pages=1034–6 |year=2009 |month=November |pmid=19861563 |pmc=2853932 |doi=10.1136/jcp.2009.067801 |url=}}</ref> | ||
===Microscopic=== | ===Microscopic=== | ||
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**Fibrosis (submucosa, lamina propria). | **Fibrosis (submucosa, lamina propria). | ||
**Muscularis mucosae is "too superficial" (muscle in the lamina propria). | **Muscularis mucosae is "too superficial" (muscle in the lamina propria). | ||
*Surface ulceration + inflammation ( | *Surface ulceration + inflammation ([[neutrophil]]s). | ||
*+/-Serration of epithelium at the surface. | *+/-Serration of epithelium at the surface. | ||
Notes: | Notes: | ||
*'''Important''' | *'''Important negative''': no nuclear atypia. | ||
Images: | Images: | ||