A major predictor of poor prognosis for Ewing sarcoma is the:
A) age of onset.
B) size of tumour.
C) presence of metastasis.
D) gender of child.

Name: A major predictor of poor prognosis for Ewing sarcoma is the: A) age of onset. B) size of tumour. C) presence of metastasis. D) gender of child.
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The presence of metastasis is a major predictor of poor prognosis in Ewing sarcoma, as it indicates that the cancer has spread beyond the primary site, making it more challenging to treat effectively.

A Major Predictor of Poor Prognosis for Ewing Sarcoma Is