The use of intra-arterial therapy is not nearly as easy as the use of systemic intravenous therapy. The unique complications of intra-arterial therapy can be minimized by selecting the right drug delivery system and by judicious use of appropriate chemotherapeutic agents. Intra-arterial therapy should not be used by physicians who are unwilling to provide the commitment necessary. Experience and dedication are essential ingredients. Only careful clinical investigation can underwrite the future in this area. REFERENCES 1. Ensminger WD, Gyves JW: Regional cancer chemotherapy. Cancer Treat Rep (68):[tel], 1984. 2. Clouse ME, Ahmed R, Ryan RB, Oberfield RA, McCaffrey JA: Complications of long-term transbrachial hepatic arterial infusion chemotherapy. Am J Roentgenol (129):[tel], 1977. 3. Niederhuber JE, Ensminger WD, Gyves JW, Thrall J, Walker S, Cozzi E: Regional chemotherapy of colorectal cancer metastatic to the liver. Cancer (53):[tel], 1984. 4. Lokich J, Ensminger W: Ambulatory pump infusion devices for hepatic artery infusion. Sem Onc (10):[tel], 1983.