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…
Indications and Preoperative Considerations Meningiomas are one of the most frequently occurring intracranial primary tumors. Sphenoid wing meningiomas (SWMs) represent up to 18% of intracranial meningiomas. Those are anatomically located along the sphenoid ridge, the bony crest formed by the…
Preoperative Considerations Craniopharyngiomas are tumors with solid-cystic components that originate from embryological remnants of the Rathke's pouch. They represent 1–3% of lifetime intracranial tumors and up to 5–10% occurring during childhood. They are commonly located in the suprasellar region, arising…
Preoperative Considerations Pituitary adenomas are the most prevalent intrasellar lesions and the third most prevalent primary intracranial tumors. These lesions can lead to significant neurologic and/or endocrine-related morbidity secondary to compression of neurovascular structures and hormonal dysfunction. Pituitary adenomas may…
Preoperative Considerations Microscopic transcortical or transcallosal approaches may be associated with brain injury and/or retraction that can result in seizures, focal neurologic deficits and cognitive impairment. Endoscopic approaches for the management of intraventricular lesions are intended to be minimally invasive…
Introduction Tumors of the lateral ventricle represent less than 1% of all intracranial tumors. The majority of these lesions are benign or low grade. The lateral ventricles are amongst the most challenging areas to operate in the brain and require…
Indications and Preoperative Considerations Posterior fossa meningiomas are uncommon lesions that can be found virtually anywhere in the infratentorial space. The management of these lesions will depend on their size, location, growth rate and clinical presentation. These tumors can be…
Indications and Preoperative Considerations Falcine meningiomas are extradural lesions that arise from the falx cerebri. They might be classified based on their relationship with the superior sagittal sinus (SSS) into anterior, middle or posterior lesions, each requiring different techniques for…
Indications In general, most focal cervicomedullary tumors are considered benign in pathology. Common tumors of the cervicomedullary region include low-grade astrocytomas, gangliogliomas and ependymomas. They are typically well-delineated and benign tumors, typically amenable to gross total resection. Contraindications Anaplastic astrocytomas…
Indications The suboccipital craniotomy is used for most lesions in the posterior fossa. Its indications are: Brain tumors such as meningiomas, ependymomas, gliomas, medulloblastomas, acoustic neuromas and metastatic lesions. Vascular lesions such as aneurysms, cavernous malformations, arteriovenous malformations and intraparenchymal…