Colloid cysts are fluid-filled sacs that typically form in your brain’s third ventricle (a fluid-containing space). Although they’re not cancerous tumors and they grow slowly, they can block the flow of cerebrospinal fluid (CSF). This causes fluid to build up in your brain. If not treated, colloid cysts can be life-threatening.
Some colloid cysts don’t cause any symptoms. Others do cause symptoms, particularly if you’re between 30 and 70 years old.
Colloid cyst symptoms can include:
Loss of consciousness
Spontaneous falls while walking (also called drop attacks)
First, you’ll meet with your doctor for a physical exam. You’ll talk about your symptoms and your doctor may order imaging tests, such as an MRI or a CT scan. After that, your doctor may recommend surgery.
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