There is evidence of a large lobulated heterogeneously enhancing soft tissue lesion arising from the clivus growing posteriorly and pushing the medulla oblongata posteriorly. This lesion is measuring about 3.5 x 3 cm. This lesion is isointense on T1 with hyperintense areas presenting hemorrhage. Hyperintense on T2WI. It presents most likely to be Chordoma, and less likely to present meningioma.
There is evidence of early pressure upon the flow of CSF through the foramen of Magendie resulting in early and minimal lateral ventricles dilatation.
There is no evidence of any other focal lesion in the brain.