In patients with intractable cancer pain who failed to respond to conservative and neurosurgical procedures for pain relief, repeated injections of epidural morphine were found to be beneficial. A small dose of morphine (2-4 mg per injection) relieved pain for 6-24 h. A permanent subcutaneous epidural catheter led to successful ambulatory treatment without complications. The implantation of the epidural catheter is a minor surgical procedure, done under local anesthesia and is considered safe even in terminal cancer patients.