[Arterial infusion chemotherapy with human tumor necrosis factor (TNF): an experimental study using rabbits bearing VX2 tumor].

: To evaluate the direct effects of TNF on tumor vessels, three groups of Japanese white rabbits bearing VX2 tumor received 5000 U, 25000, U, and 5000 U of TNF respectively. Angiograms were obtained before, and at 1, 15 and 30 minutes after arterial TNF injection. At 1 minute after TNF injection, dilated tumor vessels and dense tumor stains, depending on the dose of TNF, were demonstrated. At 30 minutes after injection these findings had disappeared However, there were no changes in normal vessels. It is suggested that arterial TNF injection influenced tumor vessels without damaging on normal vessels, indicating that it is effective as cancer therapy.