Fact-sheet: Ependymoma of brain


Updated on 08/25/2020 at 4:39 PM

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Definition

Glial tumor with intraventricular development.

Preferential supratentorial location in adults and infratentorial location in children.

It arises from the ventricles following the supraventricular arrest of the V4.

Clinical features

  • Variable depending on the location of the lesion.

CT

  • Calcified intracerebral mass.
  • Supratentorial hydrocephalus.

MRI

Specifies the intraventricular location of the lesion. Most typical appearance:

  • T1: hypo- or isointense depending on cystic appearance
  • T2: hyperintense
  • T2: hypointense hemorrhagic foci
  • Gadolinium injection: heterogeneous enhancement
  • Assessment for dissemination via CSF

These tumors have a soft tumor appearance.

Assessment for subarachnoid metastases in the basal cisterns, convexity sulci, and spinal subarachnoid spaces.

Differential diagnosis

  • Cerebral glioma.