[Effects of administration of an antineoplastic agent into the bronchial artery]

Morphological observation was performed to see the effect of bronchial arterial infusion therapy (BAI) of mitomycin C (MMC) and also of the ischemia to the transplanted bronchial carcinoma. Single shot of 2mg/kg of MMC showed destructive changes on the tumor. Single shot of 3mg/kg and repeated administration of MMC brought relatively severe intra-arterial inflammatory changes such as intimal edema, thickening and proliferation which suggested ischemic effect on the tumor due to poor perfusion from stenosis or obstruction of the vessels. On the other hand a simple ligation of the artery also brought about more than moderate destructive changes in the tumor. Therefore, mechanisms of the effect of the BAI of MMC to the lung tumor might involve the secondary effect from ischemia in addition to the effect of MMC itself.