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Intensely enhancing hyperdense lesion is seen involving the left jugular foramen, measuring approximately 3.5 x 3.5 x 3.5 cm. The lesion is causing destruction and widening of the jugular foramen.
Medially the lesion has intracranial extra dural extension in the posterior fossa indenting the cerebellar cortex.
Laterally the lesion is extending in the middle ear cavity (epi, meso and hypotympanum)and external auditory canal. There is erosion of the long process of incus, inferior semicircular canal and the basal turn of cochlea and the lateral wall of tympanic segment of facial nerve.
Lesion is infiltrating the jugular bulb and inferiorly extending into the proximal jugular vein. Posterior inferiorly there is destruction of the basi occiput and lateral aspect of foramen magnum.