Some Problems in practice of clinical stage classification of Japan Lung Cancer Society

Abstract

The purpose of this study is to evaluate the adequacy of roentgenologycally determined stages in patients with pulmonary cancer. The clinical stage classification of the Japan Lung Cancer Society was used. And pre and post thoracotomy stages were compared in 108 cases.
The results revealed that only 58 cases among 108 cases (53.7%) were diagnosed adequately. The cause of misjudges mostly derived from the difficulty to differentiate whether lymph nodes in the hilum and in the mediastinum were involved or not.