FIG 2. A, Posterior view at 24 hours from a ^99mTc-HMPAO-labeled leucocyte examination shows abnormal uptake in the midline (open arrow), overlying the brain convexity on the left side (solid arrow), and in the tentorium cerebelli bilaterally (arrowheads).

B, Coronal contrast-enhanced T1-weighted (500/9/2) SE MR image shows dural thickening and enhancement in the falx (short wide arrow), overlying the brain convexity on the left side (long thin arrow), and in the tentorium cerebelli (curved arrows).

C, Normal intracranial appearance after treatment with anti-CD52.