Colloid cyst

Discussion:

The location and CT/MRI appearance are characteristic of a colloid cyst of the third ventricle.

Most colloid cysts are found incidentally, and clinically present with headache or rarely, symptoms of raised intracranial pressure. Once seen on an image, urgent surgical consultation is required; based on the patient's clinical status and radiographic structural impact of the cyst, a resection maybe urgent. Headache associated with colloid cysts is usually positional (leaning forward) and the patient might be taught some maneuveres to relieve headache.

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