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[Supratentorial ectopic ependymoma: a case report].

T Saito1, S Oki, T Mikami

  • 1Department of Neurosurgery, Hiroshima City Asa Hospital, Japan.

No Shinkei Geka. Neurological Surgery
|January 12, 2000
PubMed
Summary

This case report highlights an unusual supratentorial ependymoma in the parietal lobe, distinct from the typical ventricular origin. It emphasizes considering ependymoma in differential diagnoses for parenchymal brain tumors.

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[Not Available].

Clinical calcium·2005

Area of Science:

  • Neurosurgery
  • Neuropathology
  • Neuroradiology

Background:

  • Ependymomas typically originate from the ventricular system, predominantly in the infratentorial region.
  • Supratentorial ependymomas are rare, and those arising within the cerebral parenchyma without ventricular connection are exceptionally uncommon.

Observation:

  • A 63-year-old woman presented with a parietal lobe mass, confirmed via CT and MRI.
  • Imaging revealed a homogeneously enhancing lesion with specific signal characteristics on T1 and T2 weighted MRI sequences.
  • Angiography demonstrated a tumor stain, indicative of vascularity.

Findings:

  • The patient underwent successful total tumor removal using stereotactic techniques and neuronavigation.
  • Pathological examination diagnosed a cellular ependymoma with focal clear cell components.

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  • Post-operative radiation therapy was administered.

    • Implications:

    • This case expands the understanding of ependymoma presentation and location.
    • It underscores the importance of including ependymoma in the differential diagnosis for supratentorial parenchymal tumors, even when not connected to the ventricles.