There is a large extra-axial parafalcine heterogeneously enhancing mass at the parietal vertex. The mass is hypointense on the T2-weighted sequence, and shows restricted diffusion with ADC values similar to normal brain. There is clear invasion into the superior sagittal sinus, for about 55 mm in length. The parietal portion of the superior sagittal sinus is occluded. The tumour invades through the parietal skull at the vertex, more so on the right side. The aponeurosis is elevated and thickened, without definite tumour invasion across the aponeurosis.
There is no definite invasion into the brain parenchyma. No significant vasogenic oedema.
The remainder of the brain and the calvarium is unremarkable without additional lesion is detected.
Conclusion:
Large parietal parafalcine tumour with invasion into the superior sagittal sinus and the parietal skull. Although this may represent a meningioma, differentials such as solitary fibrous tumour would also require consideration given the imaging appearance. The other possibilities would include metastases and myeloma.