Hyperplastic polyp with perineuromatous stroma: Difference between revisions

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Created page with "'''Hyperplastic polyp with perineuromatous stroma''', also known as '''benign serrated colorectal fibroblastic polyps/intramucosal perineurioma''' and '''hybrid hyperplastic p..."
 
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DDx:
DDx:
*[[Hyperplastic polyp]].
*[[Hyperplastic polyp]].
===Images===
<gallery>
Image: Hyperplastic polyp with perineuromatous stroma -- very low mag.jpg | HP with PNS - very low mag.
Image: Hyperplastic polyp with perineuromatous stroma -- low mag.jpg | HP with PNS - low mag.
Image: Hyperplastic polyp with perineuromatous stroma -- intermed mag.jpg | HP with PNS - intermed. low mag.
Image: Hyperplastic polyp with perineuromatous stroma - alt -- intermed mag.jpg | HP with PNS - intermed. low mag.
Image: Hyperplastic polyp with perineuromatous stroma -- high mag.jpg | HP with PNS - high mag.
Image: Hyperplastic polyp with perineuromatous stroma - alt -- high mag.jpg | HP with PNS - high mag.
Image: Hyperplastic polyp with perineuromatous stroma -- very high mag.jpg | HP with PNS - very high mag.
</gallery>


==See also==
==See also==

Revision as of 00:33, 29 October 2015

Hyperplastic polyp with perineuromatous stroma, also known as benign serrated colorectal fibroblastic polyps/intramucosal perineurioma and hybrid hyperplastic polyp/mucosal perineurioma, is a benign colorectal polyp.

General

  • Rare.
  • Benign.[1]

Microscopic

Features:

  • Serrated epithelial cells (at the surface of the gland) - key feature.
    • Serrated appearance = saw-tooth appearance, epithelium has jagged edge.
  • Perineuromatous stroma.

DDx:

Images

  • HP with PNS - very low mag.
    HP with PNS - very low mag.
  • HP with PNS - low mag.
    HP with PNS - low mag.
  • HP with PNS - intermed. low mag.
    HP with PNS - intermed. low mag.
  • HP with PNS - intermed. low mag.
    HP with PNS - intermed. low mag.
  • HP with PNS - high mag.
    HP with PNS - high mag.
  • HP with PNS - high mag.
    HP with PNS - high mag.
  • HP with PNS - very high mag.
    HP with PNS - very high mag.

See also

References

  1. ↑ Agaimy, A.; Stoehr, R.; Vieth, M.; Hartmann, A. (Nov 2010). "Benign serrated colorectal fibroblastic polyps/intramucosal perineuriomas are true mixed epithelial-stromal polyps (hybrid hyperplastic polyp/mucosal perineurioma) with frequent BRAF mutations.". Am J Surg Pathol 34 (11): 1663-71. doi:10.1097/PAS.0b013e3181f4a458. PMID 20962618.
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