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Third ventricle colloid cyst associated with subarachnoid haemorrhage
Hana Abouzeid1, Amir R Dehdashti, Nicolas de Tribolet
1Department of Neurosurgery, Geneva University Hospital, Switzerland.
Summary
A rare colloid cyst of the third ventricle can cause acute hydrocephalus and subarachnoid hemorrhage. Early diagnosis and surgical excision are crucial for a favorable prognosis in this benign brain tumor.
Area of Science:
- Neurology
- Neurosurgery
- Pathology
Background:
- Colloid cysts of the third ventricle are rare, benign tumors of endothelial origin.
- Early diagnosis and surgical excision lead to an excellent prognosis.
- Hydrocephalus is a potential complication, causing acute or chronic symptoms.
Observation:
- A case report details a 29-year-old male presenting with depressed consciousness.
- Neuro-radiological imaging revealed a third ventricle colloid cyst, biventricular hydrocephalus, and prepontine subarachnoid hemorrhage.
- No cerebral aneurysm was identified, suggesting a nonaneurysmal subarachnoid hemorrhage.
Findings:
- The study describes a rare association between a third ventricle colloid cyst and perimesencephalic nonaneurysmal subarachnoid hemorrhage.
- This association led to acute hydrocephalus in the presented case.
- The cause of perimesencephalic nonaneurysmal subarachnoid hemorrhage remains debated.
Implications:
- Third ventricle colloid cysts, though benign, carry significant morbidity and mortality risks.
- This association highlights a rare but critical presentation of third ventricle colloid cysts.
- Clinicians should consider this rare etiology in patients with unexplained subarachnoid hemorrhage and hydrocephalus.