Meningoencephalitis with Streptococcus equi Subspecies equi Leading to a Dural Arteriovenous Fistula

Figure 1

Fluid-attenuated inversion recovery images (FLAIR) showed a “dirty CSF” appearance in the right parietal region ((a), white arrow). Axial (b) and sagittal (c) T1-weighted images after the intravenous administration of gadolinium-chelate revealed a focal area of superficial contrast enhancement overlying the cerebral cortex, presumably representing a thickened pia mater.

(a)

(b)

(c)