Difference between revisions of "Gastrointestinal tract polyps"

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Gastrointestinal tract polyps (view source)

Revision as of 10:18, 24 July 2013

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=Inflammatory pseudopolyp=
=Inflammatory pseudopolyp=
*[[AKA]] ''inflammatory polyp''.
{{Main|Inflammatory pseudopolyp}}
===General===
*Not a true polyp.
*The label ''inflammatory pseudopolyp'' = [[inflammatory bowel disease]] (IBD).
**If there is no history of IBD... reconsider the diagnosis.
 
===Microscopic===
Features:
*Polypoid shape.
*Inflammation - esp. neutrophils - '''key feature'''.
 
Negatives:
*No nuclear atypia.
**May have focal nuclear hyperchromasia and nuclear enlargement.
*No dilated glands.
 
DDx:
*[[Juvenile polyp]].
*[[Mucosal prolapse]].<ref name=pmid21607734>{{Cite journal  | last1 = Aust | first1 = DE. | last2 = Rüschoff | first2 = J. | title = [Polyps of the colorectum: non-neoplastic and non-hamartomatous]. | journal = Pathologe | volume = 32 | issue = 4 | pages = 297-302 | month = Jul | year = 2011 | doi = 10.1007/s00292-011-1435-1 | PMID = 21607734 }}</ref>
**[[Solitary rectal ulcer]].
 
Images:
*[http://www.humpath.com/spip.php?article8234&id_document=18554 Pseudopolyp (humpath.com)].
*[http://missinglink.ucsf.edu/lm/IDS_106_LowerGI/Lower_GI_histo_small/24-UC-pseudoplp.jpg Pseudopolyp (ucsf.edu)].
 
===Sign out===
<pre>
SIGMOID COLON POLYP, PERI-DIVERTICULAR, BIOPSY:
- INFLAMMATORY PSEUDOPOLYP.
</pre>
 
<pre>
POLYP, DESCENDING COLON, BIOPSY:
- INFLAMED POLYPOID FRAGMENT OF COLORECTAL-TYPE MUCOSA.
-- NEGATIVE FOR DYSPLASIA.
</pre>
 
====Micro====
The sections show a fragment of colorectal mucosa with focal ulceration, acute inflammation and a well-vascularized stroma with plump stromal cells.  Occasional stromal cells have nuclear hyperchromasia.


=Adenomatous polyps=
=Adenomatous polyps=
Michael
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