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Experts Fail to Agree Smoking Causes Cancer World experts meeting in ' .Tokyo failed to agree on Tues- day whether heavy smoking caused lung cancer. During discussions on the geographic pathology of cancer In the International Cancer Con- ference in the Imperial Hotel, Dr. Johannes Clemmesen of Denmark said that in his coun- try, lung cancer was prevajent among people who smoked more than 1,200 cigarettes a ear . _ , y ter:. He said the Incidence~of lung ~' cancer was high among people ' 1 who had been smoking for 20 ~. years. Dr. Leiv Kreyberg of Nor- way way said he agreed with Dr. Clemmesen. ~ Dr. Hou Pao-chang of the ~ University of Hongkong said that he had found only one smoker among 60 lung cancer cases. American and British doctors ,~ also disagreed. , that smoking ,\1 was the only cause of lung cancer. Q They said that chimney ~ smoke and exhaust from vehi- ~ clea were also contributory fac- tors. Dr. Einar Pedersen of Nor way said that In his country the Government gave free examinations for breast cancer to all women over the age of 40: In discussions on cancer con- troi, 'Toshio Kurokawa, presi- dent of Tohoku University, said that in a check of 17;000 people in two cities In the Tohoku dis- trict, the incidence of cancer was two people -in every 1,000. Dr. Emerson Day of the and Allied Diseases In New York said that of-8,413 men and 5,111` women checked since 1946, six men in every thousand and three women in every thousand were found to'be suf- fering from cancer of the colon or rectum. He said that as the result of early surgical treatment, 88 per cent of the patients lived for more than Sve years after sur- gery. In the paneL.on professional education Wednesday, J. Tanga. Marengo of Ecuador emphasiz- ed the need to train doctors to recogniye cancers at an early Istage so that proper treatment can be given In time to assure a cure. He noted that from the answers receivec: In a survey of medicai schools in 45 countries, it appeared that too much em- phasis Is placed on educating medical students to treat ad- wanced cancer and not enough on early diagnosis. Other speakers in the panel ~i+ere Pablo Mori-Chavez of Pe- ru, R N. Grant and A. Popma, Itioth of the U.S ; D. J. Jussa- walla of India and N. Blokhin of Russia. In the afternoon session, the panel on cancer prevention, Dr. Mamoru Saito of Tokyo Uni- versity was to read his report on the appearance of cancer of the liver in mice fed moldy irice grains inoculated with penicillium. P. Kotin (U.S.) was to discuss air pollution, S. 'Watanabe (Japan) was to re- port on radiation hazards, and ,M. H. Williams (Britain) was ito discuss problems in cancer prevention. Memorial Center for Cancer NEWARK EVENTNG NE'rIS Newark, New Jersey October 14, 1960 Can't Agree T HE International Cancer Confer- ence in Tokyo, after scientists from three continents offered con- flicting evidence and opinions, was unable to agree on whether smoking and the incidence of lung cancer are significantly related. From Denmark came testimony that lung cancer is prevalent in that country among persons who smoked more than 1,200 cigarettes a year. On the other hand, research at the University of Hong Kong disclosed only one smoker among 60 1ung can- TfiE NEW YORK TIMES New York, New York October 13, 1960 - CANCER EXPERTS Si nificant Links ; g r; 'I Lc3iC. F:e. ~ _~? 4 -6_~ P cer cases recently diagnosed. In the United States the dispute has been further confused by evi- dence that air pollution, especially from motor vehicle exhausts and other forms of combustion, is also a factor in lung cancer. Meanwhile the cigarette smoker continues to smoke, and of this there Is ample proof in the behavior of tobacco stocks listed on the New York Stock Exchange. Reflecting continuing increases in earnings, they are, in contrast with other com- mon stocks, at or near their 1960 highs. Dr. Clemmesen's report was supported by Dr. Leiv Kreyberg of Norway. Other experts, how- ever, disagreed among them- selves on the relationship be- tween smoking and lung cancer, although there was considerable agreement that the incidence of lung cancer was high among persons who had smoked stead- ily for twenty years or longer. Incidence Is $eported DEBATE SNIOKING Doctors at World Parl'ey . Are Unable to Agree on Special.to.'rhe New York Tlm.ee, TOKYO, Oct. 12-A confer- ence here of world cancer ex- perts was unable to agree today on whether smoking and the in- cidenee of lung cancer are sig- nificantly related. t..The International Cancer Conference, discussing the geo- graphic pathology of the dis- ease, heard the scientists from three continents offer conflict- ing evidence and opinions on the highly controversial ques- tibn. Dr. Johannes Clemmesen of Denmark said that lung cancer was prevalent in his country among persons who smoked more than 1,200 cigarettes in one year. However, Dr. Hou Pao-chang of the University of Hong Kong said his researches had disclosed only one smoker among sixty lung cancer cases he had recently diagnosed. Dr. Emerson Day of the Me- morial Center for Cancer and Allied Diseases in New York said that'y of 8,413 men and 5,111 women checked for can- cer by the center since 1946, cancer of the rectum and colun had been iound in six of everv 1,000 men and three of everq, I,bUO women. Where earl{y surgical' treat- ment was resorted to, he told the conference, 88 per cent of the patients lived for five years or more flfter surgery; A panel on professional edu- cation in the field of cancer was told by Tanga-Marengo of Ecua- dor that greater emphasis should be placed on training doctors in the early recognition of cancer in patients rather than overem- phasis in training medical stu- dents, in the treatment of ad- vanced cancer.