Medulloblastoma

Case contributed by Juan José Gómez Muga
Diagnosis almost certain

Presentation

Headache and vomiting.

Patient Data

Age: 35 years
Gender: Female
mri

Right cerebellar hemisphere intra-axial mass showing heterogenous signal intensity on T2WI, restricted diffusion and heterogeneous enhancement on post-contrast T1WI.

Associated vasogenic edema.

Mass effect displaces pons anteriorly effacing the prepontine cistern and the cerebellar tonsils inferiorly through the foramen magnum.

Hydrocephalus.

Case Discussion

The tumor was resected and histologically confirmed to be medulloblastoma. In this location and in this age group it is most likely sonic hedgehog subtype.

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