Posterior fossa tumors

Posterior fossa tumor has a very different differential in an adult as opposed to a child.


An important space-occupying lesion (the most common in fact) to remember is that of a stroke, which when subacute can mimic a tumor. 


A quick and handy mnemonic for posterior fossa tumors in children is BEAM.

Although it is true that posterior fossa tumors are much more common in children than in adults the distribution does vary with age 2:

  • 0 to 3 years of age: supratentorial > infratentorial
  • 4 to 10 years of age: infratentorial > supratentorial
  • 10 to early adulthood: infratentorial = supratentorial
  • adults: supratentorial > infratentorial

Overall 50-55% of all brain tumors in children are found in the posterior fossa 3.

Article information

rID: 1914
Synonyms or Alternate Spellings:
  • Posterior fossa tumors in children
  • Posterior fossa tumour
  • Paediatric posterior fossa tumours
  • Posterior fossa tumor
  • Posterior fossa tumors
  • Posterior fossa tumours in children
  • Pediatric posterior fossa tumors

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Cases and figures

  • Ependymoma
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  • Medulloblastoma
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  • Pilocytic astrocytoma
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  • Ependymoma
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  • Hemangioblastoma
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  • Metastasis
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