Subdural empyema in 12-year-old girl: the value of magnetic resonance imaging.

A 12-year-old girl presented with an acute history of fever, headaches, and focal neurological deficits. An initial computed tomography (CT) scan of the head was nondiagnostic whereas plain and gadolinium-enhanced magnetic resonance imaging (MRI) detected an extensive subdural empyema. The report emphasizes the hazard of relying on a nondiagnostic CT scan in a septic patient with deteriorating neurological function, and the need of MRI with contrast enhancement if subdural empyema is a serious clinical concern.