Management of Cerebrospinal Fluid (CSF) Leak

Initial Diagnostic Approach

The American Academy of Neurology recommends ordering MRI of complete spine without and with IV contrast as the gold standard initial imaging for spontaneous intracranial hypotension, optimized with fluid-sensitive sequences 2
The spine is the anatomical source of most symptomatic CSF leaks and venous fistulas, not intracranial structures 3
High-resolution CT with thin-section bone algorithm images of the skull base with multiplanar reformation is the preferred first-line imaging for traumatic CSF leak, with 93% accuracy and 92% sensitivity 2

The American College of Neurology recommends conservative management with bed rest and hydration for 1-2 weeks before escalating to interventional treatment for spontaneous intracranial hypotension 1
Epidural blood patch is indicated when symptoms persist beyond 1-2 weeks, with a non-targeted approach used when imaging fails to localize the leak site 1

The American Heart Association recommends considering thromboprophylaxis during immobilization per institutional VTE policy after epidural blood patch 1
Urgent medical attention is needed for new severe back or leg pain, lower limb weakness or sensory changes, urinary or fecal incontinence, or fever after epidural blood patch 1

Asymptomatic patients with radiological evidence of spontaneous intracranial hypotension should be referred to a specialist neuroscience center and discussed in a multidisciplinary team, with consideration of potential long-term sequelae such as superficial siderosis 1
Patients with superficial siderosis should be managed in a specialist center, with consideration of non-targeted epidural blood patch or targeted treatment if a leak is detected 1