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Volume changes in brain tumors over time. Pituitary tumors (A) had a strong initial response followed by a gradual decline in volume. Meningiomas and gliomas (B, C) had more variable responses. There was tumor progression in the majority of the nerve sheath tumors (D). Survived tumor (straight line), died of tumor (dashed line), baseline volume (open circle), first recheck tumor volume (closed circle), second recheck tumor volume (triangle).
