Straight sinus and internal cerebral vein thrombosis
Memory disturbances, diplopia. A non contrast CT revealed bilateral abnormalities. An MRI was thus performed.
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MRI revealed bilateral near symmetric abnormal signal on T2 and FLAIR with punctate haemorrhages.
The T1 sagittal images in midline reveal a thrombus in the straight sinus and internal cerebral veins.
The venous thrombosis is also appreciated in Gradient echo axial images.
The occurrence of deep venous thrombosis involving the straight sinus and the internal cerebral veins is uncommon.
Bilateral symmetric basal ganglia/ thalamic hyperintensities should raise a suspicion of this entity and MR venography need to be added.
- Saito S, Takahashi M et al.,An advantage of T2*-weighted MRI for early detection of straight sinus thrombosis: a case report. Rinsho Shinkeigaku. 2009 Oct;49(10):646-50.
- Leach JL, Fortuna RB et al., Imaging of Cerebral Venous Thrombosis: Current Techniques, Spectrum of Findings, and Diagnostic Pitfalls October 2006 RadioGraphics, 26, S19-S41