Innumerable contrast enhancing lesions of varying sizes are seen throughout the supratentorial and infratentorial brain. Lesions are seen in cortical, subcortical and deep white matter locations. The larger lesions demonstrate rim enhancement. Several nodules appear intraventricular in location, including at the foramina of Monro, posteriorly in the third ventricle and at the floor of the fourth ventricle.
A 14 mm rim enhancing lesion is seen in the region of and appearing to compress the right foramen of Monro, with upto 5mm of midline shift to the left at this level.
The third ventricular lesion measures 10 mm and appears to compress the cerebral aqueduct, resulting in hydrocephalus of the third and lateral ventricles.
There are several regions of white matter hypodensity with the appearance of reactive oedema throughout the affected areas. There is fluid opacification of the left middle ear cavity and left mastoid air cells.