In this series of 35 patients, intraventricular morphine therapy was used when complications of peridural morphine therapy develop or when high dose morphine application by the systematic method had no effect. The quality of analgesia was assessed as "perfect” in 82 % of the cases. The average hospitalizaion period was 2 days. All other systematic sedatives, analgesics and antidepressants were stopped and the initial dose of 0,1 mg/day of morphine never subsequently exceeded 0,2-5 mg/day. Keywords : Intraventricular morphine, Pain, Cancer