Magnetic resonance imaging of cerebellar liponeurocytoma. A case report and review of the literature.

Cerebellar liponeurocytoma is a rare benign neuroepithelial tumour. We describe the case of a 50-year-old man presenting with signs of increased intracranial pressure and cerebellar dysfunction. Magnetic resonance imaging showed a heterogeneous, well-circumscribed cerebellar mass with a predominant adipose content. Diffusion-weighted imaging showed an isointense mass with a hyperintense rim. Craniotomy demonstrated a soft grey mass with intratumoral bright patchy yellow areas. Histological and immunohistochemical findings indicated an advanced neuronal, glial and focal lipomatous differentiation with a low level of mitotic activity.