Medulloblastoma CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Haytham Allaham, M.D. [2]

Overview

On head CT scan, medulloblastoma is characterized by a hyperdense mass arising from the cerebellar vermis with prominent contrast enhancement and effacement of the fourth ventricle.

CT

• On head CT scan, medulloblastoma is characterized by:

• A hyperdense mass arising from the cerebellar vermis
• Effacement of the fourth ventricle and basal cisterns
• Dilated ventricles due to obstructive hydrocephalus
• Cysts formation and necrosis are observed among 40-50% of cases
• Calcification is observed among 10-20% of cases

CT scan, showing a tumorous mass in the posterior fossa, giving rise to obstructive hydrocephalus, in a six year old girl

References

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