Figure 2

Unenhanced axial section CT scan of the patient's brain (A). A 1.6 × 2.4 cm isodensity mass (black arrows) in the left parietal lobe with edema (white arrows) surrounding (A1) prior to praziquantel (PZQ)-treatment. Marked decrease in the size of the mass (black arrows) and reduced edema (white arrows) were evident 21 days post-PZQ treatment (A2). Axial section MRI of the patient's brain (B,C). Hypointensity lesions (white arrows) on T₁-weighted spin-echo images pre-PZQ treatment (B1) were almost absolved at 25 days post-PZQ treatment (B2) and absorbed at 3 months post-PZQ treatment (B3). Hyperintensity lesions on T₂-weighted spin-echo images prior to treatment with PZQ (white arrows) (C1) were decreased in size 25 days post-PZQ treatment (white arrows) (C2) and were almost totally resolved at 3 months post-PZQ treatment (C3). Enhanced MRI of the patient's brain (D). Multiple small nodules (white arrows) scattered or clustered at the cortical/subcortical area following intravenous administration of gadolinium-DTPA pre-PZQ treatment (D1) and two nodular enhancements (white arrows) observed at 25 days post-PZQ treatment (D2); almost all nodules were absolved at 3 months post-PZQ treatment (D3).