MRI and CT Guided Cryoablation for Intracranial Extension of Malignancies along the Trigeminal Nerve.

 To describe the technical aspects and early clinical outcomes of patients undergoing percutaneous magnetic resonance imaging (MRI)-guided tumor cryoablation along the intracranial trigeminal nerve.  This study is a retrospective case review.  Large academic tertiary care hospital.  Patients who underwent MRI-guided cryoablation of perineural tumor along the intracranial trigeminal nerve.  Technical success, pain relief, local control.  Percutaneous MRI-guided cryoablation of tumor spread along the intracranial portion of the trigeminal nerve was performed in two patients without complication, with subsequent pain relief, and with local control in the patient with follow-up imaging.  Percutaneous MRI-guided cryoablation is a feasible treatment option for malignancies tracking intracranially along the trigeminal nerve.