Pilocytic astrocytoma

Case contributed by A.Prof Frank Gaillard

Presentation

Seizure.

Patient Data

Age: 30 years
Gender: Male

MRI brain

Modality: MRI

A large unusual lesion is present with a large cystic component in the right frontal lobe and a solid, heterogeneously enhancing component extending across the midline via the corpus callosum and bulging into the ventricles. There is only a thin rim of T2 high signal surrounding it, and large areas of the solid component demonstrate signal loss (calcium or blood product). 

Case Discussion

This patient went on to have a craniotomy which revealed the lesion to be a pilocytic astrocytoma. 

Pilocytic astrocytomas are usually associated with paediatric posterior fossa tumours but can be seen in adults often in unusual locations, and frequently associated with the ventricular system. 

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Case Information

rID: 7786
Case created: 7th Dec 2009
Last edited: 22nd Jan 2017
Inclusion in quiz mode: Included

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