Cerebral ventriculitis: MR findings.

Cerebral ventriculitis is an uncommon site and manifestation of infection of the central nervous system. We report the magnetic resonance findings in two patients with cytologic and CSF culture proof of ventriculitis. The findings included abnormal signal intensity of the ependyma and CSF on T2-weighted images. In addition, ependymal, meningeal, and dural enhancement was seen in one case, on T1-weighted images, after administration of Gd-diethylenetriamine pentaacetic acid.