Benign intracerebellar cyst without epithelial lining

A case of benign intracerebellar cyst is reported in a 61-year-old woman who presented progressive neurological deficits. MRI and operative findings could not reveal any evidence of neoplastic growth. The biopsied cyst wall revealed normal cerebellar tissue. The simple cyst of the cerebellum is rare, thus we discuss the clinical features and etiology of this rare entity.