Large cystic lesion located in the inferior right cerebellar hemisphere with mild surrounding parenchymal oedema. There is also a vividly enhancing mural nodule at the inferolateral aspect abutting the right jugular foramen. Multiple other smaller enhancing nodules in the posterior cranial fossa.
Additionally, a mass in the right aspect of the pituitary fossa enlarges the fossa and displaces the pituitary gland and infundibulum to the left side. The cavernous segment of the right internal carotid artery is partially encased by this mass.
Conclusion:
The appearance of the cystic lesion with a vividly enhancing mural nodule in the right inferior cerebellar hemisphere is consistent with a haemangioblastoma. Multiple smaller enhancing nodules in the posterior cranial fossa are most likely haemangioblastoma as well suggesting von Hippel Lindau disease.
Lobulated mass in the pituitary fossa is an atypical location for haemangioblastoma and pituitary adenoma remains a differential diagnosis.