Related Experiment Videos
Pseudotumor syndrome in treated arachnoid cysts
V J Maixner1, M Besser, I H Johnston
1Department of Neurosurgery, Royal Alexandria Hospital for Children, Sydney, Camperdown, Australia.
Summary
Intracranial hypertension can occur in patients with arachnoid cysts after shunt malfunction, even without cyst re-expansion. This suggests cerebrospinal fluid circulation disturbances may cause both conditions.
Area of Science:
- Neurosurgery
- Neurology
- Pediatric Neurosurgery
Background:
- Arachnoid cysts are benign fluid-filled sacs that can cause neurological symptoms.
- Cyst-peritoneal shunting is a common treatment for symptomatic arachnoid cysts.
- Intracranial hypertension is a condition characterized by elevated pressure within the skull.
Observation:
- Three patients with arachnoid cysts treated with cyst-peritoneal shunting developed intracranial hypertension during shunt malfunction.
- In one patient, intracranial hypertension correlated with arachnoid cyst re-expansion.
- In two patients, intracranial hypertension occurred without observable cyst re-expansion.
Findings:
- Shunt malfunction in arachnoid cysts can lead to intracranial hypertension.
- The absence of cyst re-expansion in two cases suggests an alternative mechanism for increased intracranial pressure.
- These cases highlight a potential shared pathophysiology between shunt-related intracranial hypertension and pseudotumor cerebri.
Implications:
- Disturbances in cerebrospinal fluid circulation may be a common pathogenic mechanism.
- Further research is needed to elucidate the precise mechanisms linking arachnoid cysts, shunts, and intracranial hypertension.
- This understanding may inform improved management strategies for patients with arachnoid cysts and related complications.