PMC2925215_01
Axial T2-weighted MRI shows areas of hyperintense signal in both the right and left cerebellar hemispheres. Findings in this MRI had led to the initial false diagnosis of an ischemic stroke in the posterior circulation.
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An MRI scan of the brain showed areas of hyperintense signal on T2-weighted images in the right rather than in the left cerebellar hemisphere (Figure 1).
Axial FLAIR sequences show an ICH in the right frontal lobe (a). The combination of hyperintensities rostral of the ICH and in the right occipital lobe (b) with a normal DWI (c) in these areas is consistent with a vasogenic edema. The alterations in the cerebellum were largely unchanged (d).
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fig2
Brain MRI and magnetic resonance arteriography/venography (MRA/MRV) showed an ICH (Figure 2(a)) of the right frontal lobe, hyperintensities on FLAIR sequences (Figure 2(b)) of the right frontal lobe rostral of the ICH and in the right occipital lobe, whereas DWI (Figure 2(c)) revealed no abnormalities, thus suggesting a vasogenic edema in these areas.
A followup MRI examination three months after admission shows a complete resolution of the vasogenic edema.
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A subsequent repeat MRI (Figure 3) of the brain three months after initial admission showed, apart from residues of the ICH, a complete resolution of the previous abnormalities.