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Difference between revisions of "Gastrointestinal tract polyps"
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Gastrointestinal tract polyps (view source)
Revision as of 15:16, 19 October 2012
, 15:16, 19 October 2012→Hyperplastic polyp
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Notes: ''Left colon'' refers to the sigmoid colon, descending colon and the distal half of the transverse colon; ''right colon'' refers to the cecum, ascending colon and proximal half of the transverse colon. | Notes: ''Left colon'' refers to the sigmoid colon, descending colon and the distal half of the transverse colon; ''right colon'' refers to the cecum, ascending colon and proximal half of the transverse colon. | ||
=Normal= | |||
===General=== | |||
*Endoscopists go after anything that is polypoid... and that may be normal. | |||
==Normal colon== | |||
===Microscopic=== | |||
Features: | |||
*Test tube like glands. | |||
*Minimal palisading. | |||
**Nuclei <3:1 height:width, width < 1 resting lymphocyte. | |||
*No nuclear pseudostratification. | |||
*Deep part of crypt more hyperchromatic than superficial component. | |||
Images: | |||
*[http://www.lab.anhb.uwa.edu.au/mb140/CorePages/GIT/images/col10he.jpg Normal colorectal mucosa (uwa.edu.au)].<ref>URL: [http://www.lab.anhb.uwa.edu.au/mb140/CorePages/GIT/git.htm http://www.lab.anhb.uwa.edu.au/mb140/CorePages/GIT/git.htm]. Accessed on: 18 October 2012.</ref> | |||
*[http://www.siumed.edu/~dking2/erg/GI027b.htm Colon (siumed.edu)]. | |||
=Hyperplastic polyp= | =Hyperplastic polyp= | ||