MRI brain shows an extra-axial enhancing lesion arising from the left dorsal clivus, measuring 15 x 20 x 8.5 millimeters. There is indentation of the cervico medullary junction and the left vertebral artery indents the left posterior aspect of the mass.
There is a second larger extra-axial lesion arising in the floor of the anterior cranial fossa in the region of the olfactory groove measuring 30 x 38 x 39 mm. Internal flow voids are noted in the mass.
Conclusion:
Dorsal clival meningioma indenting the cervicomedullary junction.
Large olfactory groove meningioma.