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Posterior Fossa Tumor

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Posterior fossa tumors develop in a region of the brain that is nearby critical brain structures, including the brain stem and cerebellum. Their position means that they can pose a threat to a patient’s health and wellbeing even if they’re benign, and they’re often difficult to treat. If you’re facing a posterior fossa tumor, rest assured that the oncology experts at the Florida Hospital Brain and Spinal Cancer Program have the leading-edge skills and technology to create a treatment plan that best suits your and your family’s needs.

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A posterior fossa tumor is a brain tumor located in an area near the base of the brain, and near critical structures of the brain, such as the brain stem, cerebellum and cranial nerves, making these tumors difficult to treat. Tumors growing in this location can block the flow of spinal fluid and cause increased pressure on the spinal cord and brain.

This type of tumor is usually a primary brain cancer, meaning it originates in the brain rather being spread from elsewhere in the body. Posterior fossa tumors can be comprised of almost any type of primary brain tumor, including gliomas, astrocytomas or hemanigioblastomas, which all arise from glial cells; ependymomas, or tumors of the brain cavity lining; meningiomas, which are tumors of the brain’s protective covering; acoustic neuromas, or benign tumors of the cranial nerve sheath; medulloblastomas, which are malignant tumors that form from incompletely developed cells; and pineoblastomas, malignant tumor of the pineal gland.

About 55 to 70 percent of pediatric brain tumors and 15 to 20 percent of adult brain tumors develop in the posterior fossa. 

Locations for Posterior Fossa Tumor