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It is a problem of great concern to prevent ocular toxicity from complicating intra-carotid administration of lipophil anticancer agents. Attempts to prevent such a side effect were made during intra-carotid chemotherapy using remodeled catheter tips for epidural anesthesia. Twenty nine patients with malignant glioma received intra-carotid administration of neocarzinostatin (NCS). Six out of 17 patients (35.3%) who received intra-carotid perfusion through an original catheter without a remodeled tip, developed ocular toxicity. The catheter tip remained proximal to the ophthalmic artery in all cases. On the other hand, 12 patients with a remodeled catheter tip did not develop ocular toxicity. In the latter group the tip of the catheter was located in the internal carotid artery sufficiently distal to the ophthalmic artery, or beyond the carotid bifurcation in 3 cases. Another advantage of the remodeled catheter was that the intra-carotid perfusion was feasible for a longer period with higher doses of NCS, than treatment with the commercial catheter for superselective embolization, which was found to be easily occluded and often ejected out of the carotid artery. Prior to and during the intra-carotid perfusion selective injection of Angiografin® was performed through the catheter and the tumor was enhanced in the area of arterial supply, indicating the extent of chemotherapy and the degree of destruction of the blood-brain barrier.

Prevention of Ocular Toxicity by the Intra-carotid Perfusion of Anticancer Agents in the Treatment of Malignant Glioma