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A rounded lobulated mass is centred on the right cavernous sinus, posterior to the carotid, eroding the adjacent bone, and displacing the pituitary, from which it is separate, slightly towards the left. It is of intermediate T1 and T2 signal, with a rapid and vivid contrast enhancement, and no associated dural thickening. No flow voids within. ADC values are relatively depressed (800 x 10^-6 cm^2/s) suggest this is a quite cellular tumour. The mass has no suprasellar extent, and the optic nerves and chiasm are unremarkable. Flow voids of the carotids and other intracranial vessels appear unremarkable.
Anteriorly, arising from the left side of the falx, and only partially imaged is an extra-axial mass with a prominent dural tail. It is also lobulated although it has a different signal intensity on T2 and different ADC values. It is more likely a separate incidental meningioma rather than representing two of the same type of lesion.
Conclusion: Differentials include multiple myeloma, lymphoma and metastases. A meningioma is and a possibility, although the morphology is atypical for this. A neurogenic tumour (schwannoma) is another possibility of a signal intensity and diffusion restriction would also be atypical for this. 2. Left para falcine extra-axial mass may represent a 2nd instance of the same pathology, although signal characteristics are somewhat different and more likely it represents a coincidental meningioma.