A 4.8 x 7.4 x 5.3 cm parafalcine meningioma is noted with prominent calcification on the left anteriorly (better seen on CT). Anteriorly the superior sagittal sinus is invaded and appears occluded on both coronal T1 C+ and phase contrast MRV.
Significant mass effect on the corpus callosum, without hydrocephalus. No osseous involvement. Relatively prominent flow voids / MRA signal in the posterior half of the tumour suggests higher vascularity. Oedema in the left frontal lobe without overt features brain invasion.
Second small meningioma located in the right anterior cranial fossa (8 x 13mm). MRA is unremarkable.
Conclusion: Large parafalcine meningioma with invasion of the superior sagittal sinus.