Of 26 patients with CT confirmed intracerebellar haematoma, 17 had ventricular drainage performed and 7 patients had the haematoma evacuated. Eleven patients died. Mortality was clearly related to state of consciousness. Seven out of 8 non-comatose patients survived but 10 out of 18 comatose patients died. As there was no incidence of deterioration immediately following placement of a ventricular drainage, the actual risk of upward transtentorial herniation seemed low. Absence of evoked potentials in 6 patients accurately predicted a fatal outcome but normal SEP and BAEP were of lesser value for predicting survival.