Papilledema overview
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Kalsang Dolma, M.B.B.S.[2]
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Papilledema |
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Diagnosis |
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Treatment |
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Case Studies |
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Papilledema overview On the Web |
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American Roentgen Ray Society Images of Papilledema overview |
Overview
Papilledema is defined as swelling of the optic disc that is caused by increased intracranial pressure. The swelling is usually bilateral and can occur over a period of hours to weeks. Unilateral presentation is extremely rare.
Pathophysiology
Papilledema is in general the result of transmission of increased intracranial pressure[1] to the anterior end of optic nerve through optic nerve sheath.
Causes
Papilledema can be caused by conditions which increase intracranial pressure. Increase in the volume of any of the cranium contents, the brain, cerebrospinal fluid and / or blood can cause increased intracranial pressure.
Epidemiology and Demographics
Papilledema occurs in approximately 50% of patients with a brain tumour.
Differentiating Papilledema from other Diseases
Papilledema should be distinguished from pseudopapilledema
Natural History, Complications and Prognosis
Papilledema regresses if the underlying cause is treated and if not can lead to vision loss.
Diagnosis
History and Symptoms
Patients with papilledema usually present with signs and symptoms of increased intracranial pressure and can lead to vision loss if the underlying condition is not treated.
Physical Examination
The signs of papilledema include blurring of the margins of the optic disc, edema, and hemorrhages on fundoscopy.
Treatment
Medical Therapy
The best treatment of papilledema is to address its underlying cause. However the root cause of papilledema is increase intracranial pressure. Drugs are use to decrease intracranial pressure. These drugs acts mainly by either decreasing cerebrospinal fluid production or by increasing its outflow.
Surgery
Surgical treatment of papilledema depends on the underlying cause. Various surgeries including shunt surgeries, craniotomies and optic nerve sheath fenestration can be done depending on the cause.