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Medulloblastoma

  • Ralph Ermoian
  • Steve Braunstein
Chapter
Part of the Practical Guides in Radiation Oncology book series (PGRO)

Abstract

Medulloblastoma is the most common malignant embryonal tumor of the central nervous system (CNS), arising in the posterior fossa, most commonly in the fourth ventricle. Following maximal safe resection of the primary tumor, patients are treated with craniospinal irradiation and a boost to either the resection bed plus margin or the whole posterior fossa, depending on whether the patient has average or high risk disease. Accurate dileation of target volumes and organs at risk requires pre-operative and post-operative imaging. For skeletally-immature patients treated with techniques other than posterior to anterior spine fields, care must be taken to avoid unacceptably large dose gradients across the vertebral bodies.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Radiation OncologyUniversity of WashingtonSeattleUSA
  2. 2.Department of Radiation OncologyUniversity of CaliforniaSan FranciscoUSA

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