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Kaplan-Meier distal, intracranial progression-free survival curves for patients undergoing intracranial surgery of a skull base metastasis versus nonskull base metastases between 1997 and 2011. The 12-month distal, intracranial progression-free survival rate for patients with skull base metastases was 82.9% versus 53.4% for patients with nonskull base metastases (p = 0.04).
