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Posterior Fossa Tumor

Screening and Tests for Posterior Fossa Tumor

Screening for posterior fossa tumors, as with most other cancers, begins with a thorough physical exam followed by imaging tests—in this case, usually an MRI scan, as CT scans are often not useful for tumors in this region of the brain. A contrast MRI scan may be performed after doctors place special markers inside the brain; this test calculates the location of the tumor and helps create a three-dimensional image of the tumor, which assists surgeons in precisely locating the tumor, thus maximizing the benefits and minimizing the potential injury to the brain associated with surgery to remove the rumor.

Other procedures are sometimes used to remove a sample of the tissue for biopsy. These include a posterior craniotomy, or open brain surgery; and stereotactic biopsy, a minimally invasive procedure that uses imaging scans to create a three-dimensional map of the brain, which helps surgeon precisely insert a think biopsy needle to collect the tissue sample. 

Locations for Posterior Fossa Tumor