Pseudotumour cerebri-neurosurgical considerations

Area of Science:

• Neurology
• Neurosurgery

Background:

• Idiopathic intracranial hypertension (IIH), also known as pseudotumor cerebri, presents with elevated intracranial pressure without a clear cause.
• Diagnosis relies on clinical signs like headache and papilledema, normal neuroimaging (CT), and normal cerebrospinal fluid (CSF) composition, excluding other conditions like sagittal sinus thrombosis.

Purpose of the Study:

• To evaluate the diagnostic criteria and treatment outcomes for pseudotumor cerebri in a cohort of patients.
• To assess the efficacy of medical versus surgical interventions for managing IIH.

Main Methods:

• Retrospective analysis of six patients diagnosed with pseudotumor cerebri.
• Diagnostic methods included clinical evaluation, CT scans, CSF analysis, and for some, lumbar infusion tests and intracranial pressure monitoring.
• Treatment strategies involved pharmacological agents and surgical CSF shunting.

Main Results:

• All patients exhibited elevated opening pressure (13-48 mm Hg) and CSF outflow resistance within normal to high ranges.
• Medical treatments (digitoxin, acetazolamide, furosemide, corticosteroids) were partially effective in two patients.
• Surgical shunting in four patients led to rapid improvement of symptoms, though one patient had persistent visual deficits.

Conclusions:

• Pseudotumor cerebri is characterized by increased intracranial pressure and impaired CSF dynamics.
• While medical management can be beneficial for some, surgical CSF shunting provides a rapid and effective solution for refractory cases.
• Early diagnosis and intervention are crucial to prevent irreversible neurological deficits, particularly visual loss.