Difference between revisions of "Intravascular papillary endothelial hyperplasia"

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*+/-Papillary formation with a fibrotic core covered by benign endothelium.<ref>URL: [http://path.upmc.edu/cases/case544.html http://path.upmc.edu/cases/case544.html]. Accessed on: 25 January 2012.</ref>
*+/-Papillary formation with a fibrotic core covered by benign endothelium.<ref>URL: [http://path.upmc.edu/cases/case544.html http://path.upmc.edu/cases/case544.html]. Accessed on: 25 January 2012.</ref>


Notes:
DDx:
*Looks like [[Kaposi sarcoma]] at high power.
*[[Kaposi sarcoma]] - esp. at high magnification.
*Other [[vascular tumours]].


===Images===
===Images===

Revision as of 05:30, 21 July 2014

Intravascular papillary endothelial hyperplasia
Diagnosis in short

Intravascular papillary endothelial hyperplasia. H&E stain.

Synonyms Masson tumour, Masson hemangioma
LM DDx Kaposi sarcoma, other hemangiomas
Site blood vessel (artery)

Prevalence uncommon
Prognosis benign

Intravascular papillary endothelial hyperplasia, also Masson's hemangioma,[1] is a benign vascular lesion.

It is also known as a Masson tumour.[2]

General

  • Benign non-neoplastic lesion - a vessel that has thrombosed and recanalized.
  • Histomorphologically may be confused with low-grade angiosarcoma or other soft tissue sarcomas.[1]

Microscopic

Features:

  • Well-circumscribed - key (low power) feature.
  • Abundant small vascular channels with benign endothelium.
  • +/-Papillary formation with a fibrotic core covered by benign endothelium.[3]

DDx:

Images

www:

See also

References

  1. 1.0 1.1 Korkolis DP, Papaevangelou M, Koulaxouzidis G, Zirganos N, Psichogiou H, Vassilopoulos PP (2005). "Intravascular papillary endothelial hyperplasia (Masson's hemangioma) presenting as a soft-tissue sarcoma". Anticancer Res. 25 (2B): 1409–12. PMID 15865098.
  2. URL: http://path.upmc.edu/cases/case544/dx.html. Accessed on: 25 January 2012.
  3. URL: http://path.upmc.edu/cases/case544.html. Accessed on: 25 January 2012.