Treatment Outcome of Gamma Knife Radiosurgery for Petroclival Meningiomas: Retrospective Analysis of a Single Institution Experience.

Background: Although Gamma Knife radiosurgery (GKRS) has been widely used for intracranial meningiomas as an alternative or adjuvant treatment, guidelines have not been established for the selection of patients with petroclival meningioma (PCM) for GKRS. In this study, we reported the factors related to tumor progression and postoperative complications in PCM patients treated by GKRS, with a review of the literatures.

Methods: Between 2004 and 2019, 64 patients (52 patients for alternative and 12 patients for adjuvant treatment) with PCM underwent GKRS in our institution.

Wedge Resection of the Falx to Clip a Distal Anterior Cerebral Artery Aneurysm.

Background: The unilateral anterior interhemispheric approach has been widely used for distal anterior cerebral artery (DACA) aneurysms. However, there are some drawbacks of this approach because of the narrow operative field, including possible brain traction injury, bridging vein injury, and inadequate exposure of the aneurysm. Here, we report a case of a DACA aneurysm covered by the falx that could not be totally exposed with the unilateral interhemispheric approach.

Acute Parent Artery Occlusion in Thrombosed Middle Cerebral Artery Aneurysm Presenting with Ischemic Stroke.

Background: Thrombosed intracranial aneurysms are complex and unstable lesions that are especially associated with ischemic stroke. Although acute parent artery occlusion manifesting with ischemic stroke is very rare, it can lead to catastrophic consequences.

Case Description: This study presents 2 cases of acute parent artery occlusion in thrombosed large and giant middle cerebral artery bifurcation aneurysms manifesting with ischemic stroke.

Primary Intraparenchymal Central Nervous System Solitary Fibrous Tumor/Hemangiopericytoma Presenting with Intracerebral Hemorrhage: A Case Report.

A 53-year old man who had a left hemiparesis from head injury of traffic accident 20 years ago visited an emergency room with suddenly developed semi-comatose mental status. Brain CT showed 8.6-cm sized solid and cystic mass on right temporal lobe that was associated with hemorrhage.