Subependymoma

Subependymoma is neuropathology tumour classically found in the fourth ventricle.

General

• Good prognosis - WHO Grade I.

Gross/radiology

• Classic location: fourth ventricle.
• Well demarcated margin.
• Usu. completely within the ventricle; does not extend into brain (like ependymomas).

Microscopic

Features:

• Microcysts with bluish material - give a spongy appearance at low magnification.
• Nuclei cluster.
  • Described as "bundles of flowers".

Negatives.

• No nuclear pleomorphism, no prominent nucleoli, no mitoses.

Images

www:

• Subependymoma (ouhsc.edu).

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  Subependyoma - intermed. mag. (WC)

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  Subependymoma - high mag. (WC)

See also

• Neuropathology tumours.
• Neuropathology.