Petroclival meningioma wikipedia
Meningioma Posterior Fossa and Petroclival. Meningiomas are typically benign (noncancerous), slowgrowing tumors that originate from arachnoidal cells, cells that make up a membrane that surrounds the brain and spinal cord.A sphenoid wing meningioma is a benign brain tumor near the sphenoid bone. Meningioma. A meningioma is a benign brain tumor. It originates from the arachnoid (not the dura), the tissue covering the brain and spinal cord lying deep to the dura. Meningiomas are much more common in females, and are more common after 50 years of age. petroclival meningioma wikipedia
In addition, the general resection techniques for removal of petroclival meningiomas are discussed in the Petroclival Meningioma: Posterior Petrosectomy chapter. With the anterior petrosal approach, the surgeon attempts to expose the upper third of the clivus as the surgical target.
Petroclival meningiomas are thought to arise from the region of the sphenooccipital synchondrosis. 2, 9, 30 Over the years there has been ongoing debate as to what the anatomic term petroclival includes. Petroclival meningiomas are formidable surgical challenges. Surgical outcomes, however, have improved as neuroimaging and surgical approaches have advanced. The surgical anatomy associated with petroclival meningiomas and the skull base approaches best suited forpetroclival meningioma wikipedia Petroclival meningioma arises in the upper twothirds of the clivus at the petroclival junction medial to the fifth cranial nerve. This case is a presumptive diagnosis based on the typical imaging appearances, other differentials are felt unlikely.