Heterogeneous high FLAIR and T2 signal in the posterior superior sagittal sinus and right transverse and sigmoid sinuses extending into the jugular bulb is consistent with thrombosis, confirmed on MRV. Normal signal is demonstrated in the left transverse and sigmoid sinuses. No restricted diffusion. Bilateral pachymeningeal thickening and enhancement. No abnormal parenchymal enhancement. Cortical and subcortical FLAIR/T2 hyperintensity in the right posterior frontal and parietal lobes adjacent to the prominent and likely thrombosed cortical vein. Mo hydrocephalus. Widespread paranasal sinusitis.
Conclusion:
Extensive dural venous sinus thrombosis involving the posterior superior sagittal sinus and right transverse and sigmoid sinuses extending into the jugular bulb is again demonstrated and stable in extent compared to the recent CT. No evidence of infarction or haemorrhage. Right frontoparietal FLAIR/T2 hyperintensity likely represents oedema.