Cerebellar pathology, especially cerebellar tumors have an important spreading posterior fossa tumors in children constitute up to 60% of all intracranial tumors; infratentorial 82% of all tumors are localized in the cerebellum. The aim of this study was to highlight the correlations between clinical features (classical triad of symptoms), the results of ophthalmoscope, laboratory and histopathology examinations in patients (children, adults) with cerebellar tumors located in the posterior fossa. We retrospectively analyzed the clinical data of 62 patients with cerebellar expansive processes in age from 0-18 years (31 children) and 18-75 years (31 adults). The comparative results have revealed the presence of five histological types of tumors of posterior fossa attesting both, children and adults: medulloblastoma, astrocytoma, oligodendroglioma, ependymoma and neurofibroma, the clinical picture is more expressive in children with tumors of the posterior fossa histological type medulloblastoma, because of the flexibility of the fibers forming the cranial sutures and fontanels, allowing the tumor to grow in volume, having no clinical manifestation until are producing the obstruction of fourth ventricle and prevent the movement of the CRL, after what induce the intracranial hypertension (ICH) and respective clinical manifestations.