Serial research of blood supply for lung cancer

Objective To study the blood supply of lung cancer,and thereby provide the theoretical basis for interventional therapy.Methods ①Bronchial arterial angiography and pulmonary arterial angiography were performed in 20 cases of lung cancer before interventional treatment.②Plain and dynamic contrast CT on the same level were performed in 32 cases of lung cancer,with measurement of the CT values before contrast and those of pulmonary arterial phase and aortic phase after contrast.③Trans-bronchial arterial CT angiography(CTBA)and trans-pulmonary arterial CT angiography(CTPA)were performed in 20 cases of lung cancer.④Trans-bronchial arterial multi-slice CT angiography(MSCTBA)and trans-pulmonary arterial multi-slice CT angiography(MSCTPA)were undertaken in 22 cases of lung cancer.Results ①Bronchial arterial supply instead of pulmonary arterial supply of lung cancer was demonstrated in all the 20 cases.②Of all the lung cancer foci,the CT values before contrast and those of pulmonary phase were similar,but increased significantly during aortic phase.③Tumor vessels and tumor enhancement were all revealed on CTBA,but none on CTPA,in all the 20 cases.④Distinct blood supply of tumor was shown on MSCTBA of 12 cases,but none on MSCTPA of 22 cases.Conclusions A serial research methods demonstrate that the blood supply of lung cancer originates from systemic circulation instead of pulmonary circulation.