FIG 2. Case 7: 28-year-old woman.

A, Coronal contrast-enhanced T1-weighted image shows diffuse abnormal meningeal enhancement (arrow) along the course of the middle and anterior cerebral arteries. A shunt catheter (arrowheads) has been placed for acute hydrocephalus.

B, Axial T2-weighted image shows edema in the deep nuclei bilaterally (arrows). This is believed to represent areas of infarction/ischemia consequent to coccidioidal vasculitis.

FIG 3. Case 1: 36-year-old man. Findings on initial study were normal (not shown). Follow-up axial contrast-enhanced T1-weighted image 2 months later shows discrete nodules of abnormal enhancement (arrow) in the perimesencephalic cistern.