CT
Axial C+ delayed
Coronal C+ delayed
Sagittal C+ delayed
Axial bone window
Axial non-contrast
Right middle ear and mastoid effusion. Right mastoid has loss of bone with thinning of the wall. Small focus of pneumocephalus just cranial to the sinus indicates erosion of the wall.
Extradural enhancing collection along the posterior and lateral right cerebellum. Several smaller enhancing cerebellar collections are associated with right sigmoid and transverse sinus thrombosis. Midline shift and tonsillar herniation due to cerebellar edema/subdural collections with crowding of the brainstem. Diffuse effacement of the sulci with hydrocephalus due to 4th ventricular obstructions.