Sunday, 28 May 2017

Colloid Cyst

Colloid cysts are intraventricular tumor of third ventricle. These constitute less than 1% of all intracranial tumors.
It is commonly seen in between age groups 20 and 40 years. Colloid cyst is usually located in the anterior third ventricle, at the level of foramen of Monro. It may block the cerebrospinal fluid ( CSF) flow causing symmetrical dilatation of both lateral ventricles and obstructive hydrocephalus. It may present insidiously or suddenly. Headache is a common presentation. Intermittent and postural nature of attacks are other common type of presentation. Drop attack due to sudden weakness of lower limbs with headache is also commonly seen in patients with colloid cyst.
  CT scan or MRI with contrast is able to detect a rounded lesion in the anterior third ventricle. Neurosurgery is the definitive treatment. Open transcranial surgery or endoscopic neurosurgery are the treatment options.

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