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Colloid Cyst of the Third Ventricle and Non-communicating Hydrocephalus - Case 2

A 48 year-old woman presented with intermittent headaches for several weeks followed by a continuous severe headache associated with vomiting.

Show the Colloid Cyst         Show the Transependymal Edema         Show the Enlarged Lateral Ventricles

Left) Axial Flair MRI; (Middle) T1-weighted with gadolinium coronal MRI; (Right) Sagittal T1-weighted MRI with gadolinium. Note the colloid cyst in the anterior third ventricle which is obstructing both foramen of Monro. There is associated hydrocephalus of the lateral ventricles. On the Flair image, the transependymal edema can be seen capping the posterior horns of the lateral ventricles. Colloid cysts may be asymptomatic. However, if they enlarge, they may result in non-communicating hydrocephalus. Classically, they result in intermittent severe headaches from intermittent obstruction of the foramen of Monro.

Revised 04/17/06.
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