Within the right cerebellopontine angle a heterogeneous peripherally enhancing multilobulated mass. Centrally there is non-enhancement and increased T2 signal without diffusion restriction and only partial flair suppression. Some areas demonstrate low T2 signal. The mass is clearly separate from the cisternal seventh and eighth cranial nerves although does abut their nerve root entry zone. The ninth and tenth cranial nerves are closely related to this lesion and difficult to separate from it. What is probably a loop of the posterior inferior cerebellar artery is seen related to the lateral surface of the mass. The adjacent brain stem and inferior cerebellar peduncle demonstrate high T2 signal. This appears to have positive mass effect and is somewhat mass like in appearance.
Along the superior surface of the left cerebellar hemisphere is a linear region off volume loss with widening of the cerebellar folia which is quite striking on axial imaging but of uncertain significance.
Conclusion: Right cerebellopontine angle mass is uncertain aetiology. The main differential is between an exophytic enhancing tumour, such as a pilocytic astrocytoma, or a tuberculoma. Although the latter is more likely in this demographic (the patient is from Africa) the overall morphology favours a tumour.