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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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All are true about pilocytic astrocytoma, EXCEPT:
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The correct answer is  Pilocytic astrocytomas (grade I/IV) are distinguished from the other types by their pathologic appearance and relatively benign behavior. They typically occur in children and young adults, and are usually located in the cerebellum. On macroscopic examination, a pilocytic astrocytoma is often cystic; if solid, it may be well circumscribed or, less frequently, infiltrative. Ref: Robbins 8th edition Chapter 28.