<原著>Vanishing tumor of the lung の 3 症例について

Abstract

We have experienced the cases of so-called "Vanishing Tumor of the Lung". In one case the vanishing tumor appeared in the left side and the cardiac failure of this case was due to Patent Ductus Arteriosus. In the others the tumors appeared in the right side, due to arterioscrelosis and constrictive pericarditis. By many reports of Japan, interlobar pleural effusions in the left side are very uncommon. Then we offer the following comment to explain the rare frequency. Usually congestive heart failure, especially right-sided cardiac failure, causes exclusively right side hydrothorax, but left-sided cardiac failure rarely causes pleural effusions. If it occurs, rare effusions with left-sided cardiac failure are mainly on the left side and it is small and interlobar. By this mechanism and obliterative pleuritis, the first case may have caused left side vanishing tumor.