PMC3764686_01
Transaxial magnetic resonance imaging of the brain. Trans-axial T1 weighted images (a, b) reveal hypointense subdural collection in bilateral fronto-parietal region (arrows), more marked on the left side. Furthermore, noted is the hypointense subdural collection over the right cerebellum (c, arrow). Transaxial T2W image shows hyperintense collections in the same corresponding areas (d-f, arrows). The ventricles are normal in size and there is no midline shift
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F1
Magnetic resonance imaging (MRI) findings revealed bilateral frontal subdural CSF collections, suggestive of hygroma, more marked on the left side [Figure 1]. Similar collection was also noted in relation to the right cerebellum [Figure 1c and f].
Transaxial 99mTc-ehylene cysteine dimer (99mTc-ECD) hybrid Single photon emission tomography/computed tomography (SPECT/CT) images. The non-contrast transaxial CT images (a-c) confirms the subdural hygroma (arrows) seen on MRI. Transaxial SPECT (d-f) and SPECT-CT (g-i) images demonstrates hypoperfusion involving bilateral frontal, parietal, and temporal cortices (arrows). Contrary to the subdural hygroma, the hypoperfusion is more marked on the right side. The occipital cortex and the cerebellum show preserved perfusion, while the basal ganglia demonstrate relative hyperperfusion, more marked on the left (e)
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F2
The SPECT/CT images confirmed the subdural hygroma [Figure 2a-c]. In addition, it also revealed hypoperfusion in bilateral frontal, parietal and temporal cortices [Figure 2d-i].