4.1 x 2.8 cm rim enhancing lesion in the posteromedial aspect of the left cerebellar hemisphere. This extends towards the dural surface which is thickened and enhancing, with a tiny tract extending from the inferior wall of the abscess towards the dura and into the bony ostium. Avid diffusion restriction within the lesion.
Moderate amount of perilesional cytotoxic oedema. The mass and abscess combine to displace and efface the fourth ventricle.
No hydrocephalus.
No other enhancing lesions.
Small amount of periventricular small vessel ischaemic change.