pseudotumor cerebri
Pronunciation: SOO-doh-too-mer SEH-ree-bry
Condition of increased intracranial pressure without identifiable mass lesion or ventricular enlargement.
Full Definition
A neurological disorder characterized by elevated intracranial pressure in the absence of a brain tumor, ventricular obstruction, or other identifiable cause. Also known as idiopathic intracranial hypertension, this condition typically affects young, overweight women and presents with headaches, visual disturbances, and papilledema. Diagnosis requires demonstration of elevated opening pressure on lumbar puncture with normal CSF composition and imaging showing no mass effect or ventricular dilation. Treatment may include weight loss, medications, or surgical CSF diversion procedures.
Usage
Usage note: Modern terminology favors 'idiopathic intracranial hypertension' over 'benign intracranial hypertension' due to potential vision loss.
In Context
- "The patient's papilledema and normal MRI findings were consistent with pseudotumor cerebri." — ophthalmology consultation
- "Management of pseudotumor cerebri includes weight reduction and acetazolamide therapy as first-line treatment." — treatment protocol