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Difference between revisions of "Colon"
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→Spirochetes: +amebiasis
(→Microscopic colitis: ref more) |
(→Spirochetes: +amebiasis) |
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==Spirochetes== | ==Spirochetes== | ||
===General=== | |||
*Very rare cause of diarrhea. | *Very rare cause of diarrhea. | ||
*Caused by ''Serpulina pilosicoli'' and ''Brachyspira aalborgi''.<ref name=pmid14718105>{{cite journal |author=Amat Villegas I, Borobio Aguilar E, Beloqui Perez R, de Llano Varela P, Oquiñena Legaz S, Martínez-Peñuela Virseda JM |title=[Colonic spirochetes: an infrequent cause of adult diarrhea] |language=Spanish; Castilian |journal=Gastroenterol Hepatol |volume=27 |issue=1 |pages=21–3 |year=2004 |month=January |pmid=14718105 |doi= |url=}}</ref> | *Caused by ''Serpulina pilosicoli'' and ''Brachyspira aalborgi''.<ref name=pmid14718105>{{cite journal |author=Amat Villegas I, Borobio Aguilar E, Beloqui Perez R, de Llano Varela P, Oquiñena Legaz S, Martínez-Peñuela Virseda JM |title=[Colonic spirochetes: an infrequent cause of adult diarrhea] |language=Spanish; Castilian |journal=Gastroenterol Hepatol |volume=27 |issue=1 |pages=21–3 |year=2004 |month=January |pmid=14718105 |doi= |url=}}</ref> | ||
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Special stain: | Special stain: | ||
*Silver stains highlight 'em (e.g. Warthin-Starry stain). | *Silver stains highlight 'em (e.g. Warthin-Starry stain). | ||
==Amebiasis== | |||
===General=== | |||
*Infection with ''Entamoeba histolytica''.<ref>URL: [http://www.health.state.ny.us/diseases/communicable/amebiasis/fact_sheet.htm http://www.health.state.ny.us/diseases/communicable/amebiasis/fact_sheet.htm]. Accessed on: 17 June 2010.</ref> | |||
May cause:<ref name=pmid20303955>{{Cite journal | last1 = Mortimer | first1 = L. | last2 = Chadee | first2 = K. | title = The immunopathogenesis of Entamoeba histolytica. | journal = Exp Parasitol | volume = | issue = | pages = | month = Mar | year = 2010 | doi = 10.1016/j.exppara.2010.03.005 | PMID = 20303955 }}</ref> | |||
*Dysentery (diarrhea containing mucus and/or blood in the feces). | |||
*Colitis. | |||
*Liver abscess. | |||
May mimic colon cancer.<ref name=pmid19332922>{{Cite journal | last1 = Fernandes | first1 = H. | last2 = D'Souza | first2 = CR. | last3 = Swethadri | first3 = GK. | last4 = Naik | first4 = CN. | title = Ameboma of the colon with amebic liver abscess mimicking metastatic colon cancer. | journal = Indian J Pathol Microbiol | volume = 52 | issue = 2 | pages = 228-30 | month = | year = | doi = | PMID = 19332922 | url=http://www.ijpmonline.org/article.asp?issn=0377-4929;year=2009;volume=52;issue=2;spage=228;epage=230;aulast=Fernandes }}</ref> | |||
===Microscopy=== | |||
Features: | |||
*Round/Ovoid eosinophilic bodies ~ 40-60 micrometers in maximal dimension. | |||
*Found in bowel lumen. | |||
*Ingest RBCs. | |||
Image: | |||
*[http://commons.wikimedia.org/wiki/File:Amoebic_dysentery_in_colon_biopsy_%281%29.jpg Amebiasis (WC)]. | |||
==Polyps== | ==Polyps== | ||