J.Jpn. Surg. Soc.. 79(8): 797-802, 1978

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Report on the annual meeting

EARLY STAGE LUNG CANCER

Of 1,200 cases of lung cancer treated by the Department of Surgery, Tokyo Medical College only 46 cases (3.8%) were early stage. Analysis of the statistics indicated that early stage cases had not only the highest resectability but also a significantly better five-year survival (80% for early stage cases as opposed to 62.2%, 28.0% and 6.9% for Stages I, II and III, respectively). Further statistical figures on early stage cases are presented.
In view of the importance of mass surveys in the detection of early stage cases, the author presents a breakdown of over 1.7 million mass examinees over the past 24 years in which 175 cases of lung cancer were detected, and the results of the inclusion of sputum cytology examinations in mass surveys in an attempt to detect more central type early stage cases.
Policy on mass surveys to improve early detection consists of reexamination of any cases with abnormal minifilms and thorough follow-up examinations, while in the high risk group of over-40 males with Brinkmann indices of more than 400, three-day sputum specimens are examined, and any of these which show squamous metaplasia recieve biannual follow-up.

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