Category Neurosurgery

Foramen Magnum Meningiomas

Preoperative Considerations Meningiomas accounts for 77% of all non-cancerous intradural, extramedullary tumors of the craniocervical junction. The foramen magnum (FM) region is a complex surgical area. Tumors may develop intradurally or extradurally and may represent a surgical challenge. Several classification…

Vestibular Schwannomas

Preoperative Considerations Vestibular schwannomas (VSs) or acoustic neuromas arise from the Schwann cells forming the sheath (covering) of the vestibulocochlear nerve. Most of these tumors arise from the superior division of the vestibular nerve (located in the internal auditory canal),…

Approaches to the Orbit

The orbit is an area that neurosurgeons may approach for orbital tumors with an intracranial component or as a corridor to access the anterior cranial fossa. Approaches to the orbit can be transorbital (within or through the orbit), endonasal, transcranial…

Invasive Pituitary Adenomas

Preoperative Considerations Pituitary adenomas are benign epithelial neoplasms derived from the pituitary glands. In the absence of a macroscopic capsule, those lesions can infiltrate adjacent structures such as the cavernous and sphenoid sinuses, dura and brain parenchyma. These tumors are…