Blood supply of bronchogenic carcinoma: comparative investigation based on CTA and DSA.

Purpose To further investigate the blood supply of bronchogenic carcinoma by the way of combining CTA with DSA,and therefore , to provide theoretical evidence for interventional theraphy of the disease. Methods The DSA and CTA of bronchial and pulmonary artery were performed simultaneously in 20 patients with bronchogenie carcinoma( 14 central tumors and 6 peripheral tumors). Results In 20 patients with lung cancer, both tumor vessesl apperance and tumor stain were observed from DSA of bronchial artery. Enhanced tumor and vessels which mainly distributed in the peripheral part of the tumor were observed from CTBA (CTA of bronchial artery)in the same patient.There was no evidence showed that lung cancer tissues were supplied by the pulmonary artery on DSA and CTPA(CTA of the pulmonary artery) .In 10 cases of 20 patients,the condition of pulmonary artery system and pulmonary blood perfusion were normal in the affceted area on DSA, While the branch of pulmonary artery were encased by tumor or attached to the tumor on CTPA. In other 10 cases, the branch of pulmonary arteries were thinned, narrowed or even obliterated on DSA and not able to be observed on CTPA. Conclusions The bronchial artery was the blood supply artery of lumg cancer. The pulmonary artery was the blood supply artery of lung cancer. The pulmonary artery didnt participate in the blood supply of cancer. Intra - arterial chemotherapy or emboliza-tion for lung cancer should be performed through the bronchial artery, While not via pulmonary artery.