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(A) Brain magnetic resonance imaging (MRI) scans obtained 11 days after antibiotic therapy. (Left) Axial diffusion-weighted image (DWI) showing a high-intensity lesion in the right frontal lobe (arrow). (Right) Axial T1-weighted image showing no hemorrhage in the same lesion. (B) Preoperative brain MRI scans obtained on admission at our hospital. (Left) Axial DWI showing a high-intensity lesion in the right frontal lobe (arrow). (Right) Axial T2-star-weighted image showing microhemorrhage in the same lesion (arrow).
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After an additional 7 days of antibiotic therapy, brain MRI scan showed recurrence of CI (1.0 cm) in the right frontal lobe (Fig. 1A). He had indications of emergency surgery for recurrent cerebral infarction, but a new ICH in the infarction lesion in the right frontal lobe was observed on the brain MRI scan (Fig. 1B).