Axial contrast-enhanced CT scan in a 36-year-old woman with frontal sinusitis who has developed headache and fever. There is a large peripherally enhancing extraaxial fluid collection in the anterior cranial fossa. The biconvex shape is a classic finding with an epidural empyema.
CT: computed tomography.
Courtesy of Andrew L Wagner, MD.
Graphic 69915 Version 4.0
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