This question was answered on Sat 12, Sep 2009 10:00am by Dr. Monica, MD
Ewing's Sarcoma vs PNET - what's the difference?
Asked by webhill (Male; 22 ) on Mon 31, Aug 2009 05:43am
Can anyone explain for me the difference between Ewing's Sarcoma and PNET (peripheral neuroectodermal tumor or primary
neuroectodermal tumor) of the proximal femur? I was once told they are "very similar, yet different" and it has been bugging
me for years ever since a friend of mine died from PNET.
Ewings sarcoma and PNET basically belong to the same family of tumors and represent different biologic spectrum of the same disease. PNET has more features of neuronal diffentiation while Ewings sarcomas are undifferentiated tumors. However these terms are often used interchangably. The clinical behavior and treatment is similar.
The site is not a replacement for professional medical opinion, examination, diagnosis or treatment. Always seek the advice of your medical doctor or other qualified health professional before starting any new treatment or making any changes to existing treatment.
Do not delay seeking or disregard medical advice based on information written by any author on this site. No health questions and information on askanoncologistnow is regulated or evaluated by the Food and Drug Administration and therefore the information should not
be used to diagnose, treat, cure or prevent any disease without the supervision of a medical doctor. Posts made to these forums express the views and opinions of the author, and not the administrators, moderators, or editorial staff and hence askanoncologistnow and its principals will accept no liabilities or responsibilities for the statements made.