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DOI: 10.1148/radiol.2483070362
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(Radiology 2008;248:725-736.)
© RSNA, 2008

Reviews

Imaging of Skull Base Cerebrospinal Fluid Leaks in Adults1

Kristen M. Lloyd, MD, John M. DelGaudio, MD, and Patricia A. Hudgins, MD

1 From the Departments of Radiology (K.M.L., P.A.H.) and Otolaryngology (J.M.D.), Emory University School of Medicine, 1364 Clifton Rd NE, Atlanta, GA 30322. Received February 21, 2007; revision requested April 26; revision received April 8, 2008; accepted April 17; final version accepted April 21. Address correspondence to P.A.H. (e-mail: phudgin{at}emory.edu).

Cerebrospinal fluid (CSF) leak occurs when there is an osseous and dural defect at the skull base, with direct communication of the subarachnoid space to the extracranial space, usually a paranasal sinus. Recognition of the leak site and source and appropriate treatment are necessary to avoid rhinorrhea or otorrhea, low-pressure headaches, and meningitis, known complications of CSF leak. The imaging evaluation has evolved over the past several decades. Description of current techniques available to direct treatment options, including multidetector thin-section computed tomography, and imaging recommendations are presented.

© RSNA, 2008




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