Cerebellar pilocytic astrocytoma

Case contributed by Dr Hasan Akdemir


Presented with an occipital headache radiating anteriorly and vertigo. The patient was ataxic.

Patient Data

Age: 20 years
Gender: Female



Right cerebellar mass lesion with suspected mural nodular area in cerebellum hemisphere.  With defined mass lesion with cerebellum, pons, mesencephalon, superior cerebellar peduncle pushing, right pontocerebellar corner system and depression on the IV. ventricle, constriction in the ambient-quadrigeminal system, minimal tonsillar herniation. A few  nonspecific hyperintense focuses in the periventricular white matter in the right frontal lobe

5 years post-operative


A few, millimetric, nonspecific, hyperintense foci in the periventricular and subcortical white matter in the right frontoparietal localization. Arachnoid cyst formation in the anterior part of the left cerebellar hemisphere. Encephalomalacic cystic cavity in the lateral segment of the left cerebellar hemisphere.


Pilocytic astrocytoma WHO grade I

Case Discussion

After MR imaging, the patient went to operation for the mass seen in the cerebellum.
After about 5 years of follow-up, the patient returned to daily work without any sequela and is now working.

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