A vividly enhancing mass in the left cerebellar hemisphere has associate prominent vessels (best seen as flow-voids on T2 and coronal FLAIR) and local mass-effect without hydrocephalus. It is difficult to categorically place this lesion as either intra- or extra-axial. It abuts the dura with only a small area of contact and no dural tail. No other lesions identified.
Although in this clinical setting a melanoma metastasis must be included in the differential, absence of haemorrhage or intrinsic high T1 signal and presence of large vessels strongly favour an alternative diagnosis, namely a haemangioblastoma.