malignant Brain tumor measure 6.1cm x 3.9 cm | Figure 1

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Malignant Brain Tumor Measure

6.1 cm x 3.9 cm

Case Descriptions

Axial noncontrast CT shows a hyperdense colloid cyst (arrow) at the roof of the anterior third ventricle. This finding is confirmed on the sagittal and coronal T1-weighted MRI. Colloid cysts are located at the foramen of Monro and account for up to 20% of intraventricular masses. This is typically an incidental imaging finding. However, patients may present with sudden onset of severe headache or collapse related to ventricular obstruction.

Herniation

CECT of a 15 month old boy, who was unable to sit or walk (child had learnt to walk already before this illness) and liked to keep head tilted towards left. Possibilities?

Cerebral abscess at third ventricle versus neoplasm

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