OF SOME IMPORTANT PROBLEMS CONCERNING LUNG CANCER PART I CONSIDERATIONS OF EPIDEMIOLOGY ETIOLOGY AND PATHOGENESIS
BRONCHOGENIC carcinoma remains one of the most challenging diseases faced by the medical profession, not only because of its frequency, but also because so little has been accomplished in its management since the recognition of its increasing significance particularly during the past two decades. Some of the important problems encountered in considering the present situation warrant reviewv. In previous publicationst' 2 stress was laid on the importance of early diagnosis, means by which this might be achieved, and the importance of hematogenous spread in determining the eventuial outcome. The possibility that emphasis might quite properly be placed on prevention rather than treatment was mentioned in vie w of the causal association iof cigarette smoking. At the present time, all these factors continue to demonstrate a relationship that becomes more firmly established with the passing years and represent fundamental considerations in creating an intelligent attack on this lethal disease.