- Medical Directors - Board of Directors - Contact Us - Meet
Your Sponsors - Social Work Support Services - Jenna's Corner
Online Community - Family 2 Family - Loss, Grief and Bereavement
Program What Brain Tumors Are Common in Children? Most recently
updated on April 10, 2013 Most childhood tumors (more than 60%)
are located in the posterior fossa (the back compartment of the
brain). This area is separated from the cerebral hemispheres by
a tough membrane called the tentorium. The posterior fossa
includes the cerebellum, the brainstem, and the fourth
ventricle. Tumors in this area include medulloblastomas (also
called primitive neuroectodermal tumors, or PNETs), cerebellar
astrocytomas, brainstem gliomas, and ependymomas. Although less
common, other rare types of tumors have also been observed in
this area, such as rhabdoid tumors and ganglioglioma; these are
not discussed in detail below. The remaining 30% to 40% of brain
tumors occur within one of the two cerebral hemispheres or in
the spinal cord. Tumors