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Difference between revisions of "Gastrointestinal tract polyps"
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Gastrointestinal tract polyps (view source)
Revision as of 01:06, 7 December 2011
, 01:06, 7 December 2011→Hyperplastic polyp: more
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=Hyperplastic polyp= | =Hyperplastic polyp= | ||
===General=== | ===General=== | ||
*Most common type of | *Most common type of polyp | ||
*Approximately 90% of all colonic polyps.<ref name=Ref_PBoD858/> | |||
*Most common type of [[gastric hyperplastic polyp|gastric polyp]].<ref name=pmid19037727>{{Cite journal | last1 = Jain | first1 = R. | last2 = Chetty | first2 = R. | title = Gastric hyperplastic polyps: a review. | journal = Dig Dis Sci | volume = 54 | issue = 9 | pages = 1839-46 | month = Sep | year = 2009 | doi = 10.1007/s10620-008-0572-8 | PMID = 19037727 }}</ref> | |||
=== | ===Microscopic=== | ||
Features:<ref name=Ref_PBoD858/> | Features:<ref name=Ref_PBoD858/> | ||
*Irregular crypt architecture - tortuosity. | *Irregular crypt architecture - tortuosity. | ||
*Serrated epithelial cells (at the surface of the gland). | *Serrated epithelial cells (at the surface of the gland) - only colorectal polyps - '''key features'''. | ||
**''Serrated'' appearance = ''saw-tooth'' appearance, epithelium has jagged edge. | **''Serrated'' appearance = ''saw-tooth'' appearance, epithelium has jagged edge. | ||
*Significant negatives: | *Significant negatives: | ||
**No nuclear atypia. | **No nuclear atypia. | ||
**Goblet cells should be present (as is usual in the colon). | **Goblet cells should be present (as is usual in the colon). | ||
DDx: | |||
*[[Sessile serrated adenoma]]. | |||
Images: | Images: | ||