Abstract
Findings of chest roentgenogram and perfusion scintigram were studied in 17 cases of primary pulmonary carcinoma with pleural indentation. Histologically, 16 cases were adenocarcinoma and one was alveolar cell carcinoma. The pleural indentation was demonstrated in 15 cases such as streaky or strand shadow connected with triangular shadow at the chest wall, and indrawing of interlobar pleura toward tumorous shadow was shown in 6 cases. In 10 cases, contraction of the peripheral bronchi around tumor was demonstrated bronchographically, and that of pulmonary vascular marking was shown in 8 cases, too. The perfusion scintigraphy was carried out on 16 cases. In 11 cases, area of decreased radioactivity was more extended than that expected from the tumorous shadow on chest x-ray film. The abnormal findings of perfusion scintigram were discussed in relation to the pleural indentation, the contraction of the peripheral bronchi and that of the pulmonary arteries.
