Prognostic Significance of Peritumoral Edema in Patients With Vestibular Schwannomas.

Background: Peritumoral edema (PTE) in skull base meningiomas correlates to the absence of an arachnoid plane and difference in outcome. In vestibular schwannomas (VS), PTE and its significance for microsurgery and outcome have never been systematically evaluated.

Objective: To evaluate whether PTE correlates with tumor characteristics, the presence of an arachnoid plane, and outcome.

Operative management of patients with radiosurgery-related trigeminal neuralgia: analysis of the surgical morbidity and pain outcome.

Object: Trigeminal neuralgia (TGN) occurring after radiosurgical treatment of cerebellopontine or petroclival tumors may be very difficult to control. Our aim was to determine the efficacy of neurosurgical treatment in regards to pain control and to evaluate the procedure-related complication and morbidity rates.

Methods: Retrospective study of a series of operated patients with radiosurgery-induced TGN.