PMC3666907_01
Case 1: brain magnetic resonance imaging (MRI) showed old infarction and encephalomalacia lesions in the left lentiform nucleus, right temporal, occipital, and bilateral frontal and parietal lobes, with hyperintensity on T2-weighted imaging (A) and hypointensity without enhancement on postenhanced T1-weighted imaging (B).
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The findings of brain magnetic resonance imaging (MRI) were multiple old infarcts with encephalomalacia in bilateral cerebral hemispheres and the left cerebellar hemisphere (Figure 1).
PMC3666907_02
Case 2: brain computed topography (CT) without contrast (A) and postcontrast (B) showed hyperdense lesions with mild gyriform enhancement along the cortices of the right temporoparietal lobe.
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Immediately brain computed topography (CT) was performed; the results revealed a hyperdense, gyriform lesion along the cortices of the right temporoparietal lobe, with perifocal edema (Figure 2A). The brain CT findings were discussed with a neurosurgeon, and arteriovenous malformation (AVM) with hemorrhage was suspected (Figure 2).
Case 2: brain magnetic resonance imaging (MRI) showed subacute to chronic infarction with hemorrhagic transformation lesions along the gyri of the right temporoparietal lobe, with mild hyperintensity and hypointensity linear lesions on T2-weighted imaging (A), gyriform enhancement on postenhanced T1-weighted imaging (B), and mild hypointensity on diffusion-weighted imaging (C).
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The brain MRI finding was subacute to chronic infarction with hemorrhagic transformation in the right temporoparietal lobe; the differential diagnosis was encephalitis with petechial hemorrhage (Figure 3).