Ependymoma of posterior third ventricle

Case contributed by Dr Jeremy Jones

Presentation

Headache and altered gaze.

Patient Data

Age: 7
Gender: Female
Modality: MRI

A large well defined mass with restricted diffusion, but limited contrast enhancement centred in the pineal region. It results in obstructive hydrocephalus, clearly of some duration (as the ventricles are very large) but also with transependymal oedema. 

Modality: MRI

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The patient went to theatre for excision of the mass.

Histology confirmed the mass to be an ependymoma.

Case Discussion

This is a case of a common paediatric tumour being found in an uncommon location.  In paediatric populations, ependymomas are usually found in the posterior fossa.  And, they are not usually amongst the differential of a pineal region mass

However, the mass does abut the posterior portion of the third ventricle and it is its location within the 3rd ventricle and its subsequent expansion of the ventricle and obstruction of the aqueduct that should aid diagnosis.

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Case Information

rID: 21898
Case created: 24th Feb 2013
Last edited: 29th Dec 2015
Tag: pineal
Inclusion in quiz mode: Included

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