[Spontaneous primary hematomas of the cerebellum].

Spontaneous cerebellar hematoma is a well-defined radio-clinical entity. It may occur, not only in patients with risk factors (hypertension for instance), but also in those who have no specific etiologic factors. Onset is usually sudden. The characteristic clinical triad consists of alterations in consciousness, peripheral facial palsy and various oculomotor disorders. Poor prognosis factors related to the size and localization of the hematoma can be determined by computed tomography. We believe that surgery is indispensable in hydrocephalus as well as in increasing or secondary onset of alterations in consciousness.