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Adult cerebellar liponeurocytoma with predominant pilocytic pattern and myoid differentiation

One of the new entities incorporated in the latest classification of the tumours of the nervous system is cerebellar liponeurocytoma [1]. Lipidization, one of its defining features, is rare in neuroepithelial neoplasms. It is encountered sporadically in lowand high-grade astrocytomas [2–6], ependymomas [7,8], supratentorial primitive neuroectodermal tumours [9,10], medulloblastomas; the latter probably represent the same type of tumour as liponeurocytoma (see discussion). Myoid differentiation is exceedingly rare in neuroglial neoplasms [11,12]. We report a unique combination of these features, together with predominant pilocytic astrocytoma pattern, in an adult cerebellar tumour.