case_images: PMC4989586_01
case_images: Brain CT shows bilateral pulvinar hypodensity and subacute hemorrhage within.
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case_images: The brain CT was then repeated and revealed bilateral pulvinar hypodensity and subacute hemorrhage within (Figure 1).
case_images: (a) Sagittal T1 MRI without contrast shows hyperintense vein of Galen and straight sinus; (b, c, d) T2 and fluid attenuation inversion recovery and flair; (e, f) MRI shows bilateral thalamic T2 hypersignal and edema with subacute hemorrhage; (g, h) diffusion-weighted MRI shows restricted diffusion; (i, j, k) susceptibility weighted imaging (SWI) MRI shows bilateral intrathalamic hemorrhage; and (l) time-of-flight (TOF) MRI shows patent basilar artery and posterior cerebral artery (PCA) bilaterally.
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case_images: Intrathalamic hemorrhage was also noted (Figure 2).
case_images: MRV shows patent dural venous sinuses with right transverse and sigmoid sinuses reduced calibers.
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case_images: Brain magnetic resonance venography (MRV) showed right transverse, and sigmoid sinuses reduced calibers with no corresponding cerebral lesions (Figure 3).
case_images: Positive pathergy test: postural rash on the right arm.
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case_images: Pathergy test was repeated again and showed a stark positivity (Figure 4).
case_images: (a,b) Flair, (c,d) T2, (e) SWI, (f) T1 MRI show no active lesions and chronic hemorrhage; (g, h) T1 MRI shows disappearance of hyperintense vein of Galen; and (i) follow-up MRV shows reduced calibers of right transverse and sigmoid sinuses along with patent remaining dural sinuses.
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case_images: Follow-up MRI and MRV were done and revealed no active lesions (Figure 5).