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Difference between revisions of "Small intestine"
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=[[Immunohistochemistry]]= | =[[Immunohistochemistry]]= | ||
*Normal small intestine is CK20 +ve... while adenocarcinoma of the small bowel may be CK20 -ve.<ref>{{cite journal |author=Chen ZM, Wang HL |title=Alteration of cytokeratin 7 and cytokeratin 20 expression profile is uniquely associated with tumorigenesis of primary adenocarcinoma of the small intestine |journal=Am. J. Surg. Pathol. |volume=28 |issue=10 |pages=1352–9 |year=2004 |month=October |pmid=15371952 |doi= |url=}}</ref> | *Normal small intestine is CK20 +ve... while adenocarcinoma of the small bowel may be CK20 -ve.<ref>{{cite journal |author=Chen ZM, Wang HL |title=Alteration of cytokeratin 7 and cytokeratin 20 expression profile is uniquely associated with tumorigenesis of primary adenocarcinoma of the small intestine |journal=Am. J. Surg. Pathol. |volume=28 |issue=10 |pages=1352–9 |year=2004 |month=October |pmid=15371952 |doi= |url=}}</ref> | ||
=Clinical= | |||
==Small bowel obstruction== | |||
*Abbreviated ''SBO''. | |||
===General=== | |||
*Radiologic/clinical diagnosis | |||
The usual causes of bowel obstruction (large & small) are (mnemonic) ''SHAVING'': | |||
*Strictures (think [[IBD]]). | |||
*Hernias. | |||
*Adhesions. | |||
*[[Volvulus]]. | |||
*Intussusception. | |||
*Neoplasia. | |||
*Gallstone ileus. | |||
The top three are:<ref>URL: [http://www.emedicine.com/EMERG/topic66.htm http://www.emedicine.com/EMERG/topic66.htm]. Accessed on: 19 April 2011.</ref><ref>TN 2007 GS21</ref> | |||
* Adhesions > hernias > neoplasms. | |||
In the context of bowel obstructions and IBD, pathologists often see resected [[stoma]]s (that were put in place emergently). These specimens are usually fairly straight forward. | |||
=The segments= | =The segments= | ||