Neurofibroma classification: Difference between revisions

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==Overview==
==Overview==
Neurofibroma may be classified into 2 subtypes: dermal neurofibroma and plexiform neurofibroma.
==Classification==
==Classification==
Neurofibromas have been subdivided into two broad categories: dermal and plexiform. Dermal neurofibromas are associated with a single peripheral nerve, while plexiform neurofibromas are associated with multiple nerve bundles.  According to the World Health Organization classification system, dermal and plexiform neurofibromas are [[Grading (tumors)|grade I]] tumors.  Plexiform neurofibroma are more difficult to treat and can transform into malignant tumors. Dermal neurofibroma do not become malignant.
Neurofibroma may be classified into 2 subtypes:<ref>Neurofibroma. Wikipedia 2015. https://en.wikipedia.org/wiki/Neurofibroma</ref>
 
* Dermal neurofibroma
===Dermal neurofibroma===
:* Dermal neurofibromas are associated with a single peripheral nerve.
 
* Plexiform Neurofibroma
===Plexiform Neurofibroma===
:* Plexiform neurofibromas are associated with multiple nerve bundles.  
 
About 10% of plexiform neurofibromas undergo transformation into a [[malignant peripheral nerve sheath tumor]] (MPNST).<ref name="pmid12898075">{{cite journal |author=Mautner VF, Friedrich RE, von Deimling A, Hagel C, Korf B, Knöfel MT, Wenzel R, Fünsterer C. |title=Malignant peripheral nerve sheath tumours in neurofibromatosis type 1: MRI supports the diagnosis of malignant plexiform neurofibroma. |journal=American Journal of Pathology |volume=45 |issue=9 |pages=618–25 |year=2003 |pmid=12898075 |doi=10.1007/s00234-003-0964-6}}</ref>  The formation of malignant cancers from neurofibromas is associated with the loss of expression of the [[P16 (gene)|CDKN2A]] or [[TP53]] gene in non-myelinating Schwann cells that also exhibit biallelic inactivation of the NF1 gene.


==References==
==References==

Revision as of 19:35, 13 November 2015

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shanshan Cen, M.D. [2]

Overview

Neurofibroma may be classified into 2 subtypes: dermal neurofibroma and plexiform neurofibroma.

Classification

Neurofibroma may be classified into 2 subtypes:[1]

  • Dermal neurofibroma
  • Dermal neurofibromas are associated with a single peripheral nerve.
  • Plexiform Neurofibroma
  • Plexiform neurofibromas are associated with multiple nerve bundles.

References

  1. Neurofibroma. Wikipedia 2015. https://en.wikipedia.org/wiki/Neurofibroma


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