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A young woman had a frontal lobe astrocytoma 14 years after successful treatment of a posterior fossa medulloblastoma by surgery and whole-neuraxis irradiation. The association of these two tumors is rare, and it is unlikely that the second tumor was the result of metastasis and differentiation of residual or recurrent medulloblastoma. We review the evidence supporting this view and also the likelihood that the astrocytoma was induced by the prior radiation.
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Cohen et al. (1981) studied this question.
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