The MRI study post first surgical resection/debulking demonstrates residual tri-lobular trigeminal schwannoma with a reduced volume of the cisternal or preganglionic segment in the right CP angle. Reduced but persistent regional mass effect on the brainstem. Post-surgical intralesional haemorrhage evident on T1WI and SWI. There is blooming on SWI along the surgical tract from the posterior fossa craniotomy. The ganglionic and postganglionic segments appear static and untouched. The mass effect on the optic chiasm, the hypothalamus, third ventricle and aqueduct is reduced and no progressive obstructive hydrocephalus is present. The diffusion study remains normal post-surgery.
New right mastoid effusion.