Document jNjmwOQxM2474eJGM5ZV3RD82

:'l r , : . ' ' '":i i ! I .III'OIHK :: pf 'll : ;\p. HI, 11 I' i" i I . ,,\:iri..v' . I.;,, status of this <|u>-' : a is as follows: `lii* i a;; 1 i sli ore the most expori enn-'J in this field. However, .1 r.ling to Ku;;lish doe unicntn C ion , ibis experience unfortunate! V does a 1. nd iiseir c die study of individual obsorvnl ions. This is doc to" liu (net that it is very compLcx. since somr individual crises have hoon i silt'd mure than once, end cannot he traced individually. Fur (.lie i i he jug. i.e sli.i.l I have to accept the figures produced hy Cloy no. based or VI a u trips i ex oT ashvstoc.is carriers (according Co Bunder), during ip. (ill he observed f> cases ot lung cancer (probably with pleural growth). This gives us a lung cancer incidence of 12% in asbestoois patients. Very similar figures were obtained from the United States. ] as able to collect 13 autopsy eases in U.S. literature up to 1939. This Figure is probably not totally accurate, since there were a few works which I was unable to obtain. Among these autopsy cases of asbestosi.:;, I en countered 2 cases of bronchial cancer, which we hove already mentioned. 'Vlii s corresponds to a percentage figure of about 15%. There, was no mention of any oilier types of organic cancer. Pneumonia was quite often reported (4 times) as the cause of death. subj ccc. Absolutely no relevant data is available from France on this Ocher countries also reported little on the subject. In Italy, whore nshestosis is well-known, no cases of lung cancer have yet been reported (Vigliani et al.). In world-wide literature, we therefore find 14 cases of malignant lung and pleural growths of epithelial origin out of 92 autopsies per formed. The incidence of lung cancer in autopsled cases of ashescosis is therefore around 16%. Of these' 14 cases, only 11 have ns yet been described in detail, so lh;i: additional statistical data still remains to be obtained (see Table 2). A breakdown by sex gives us 7 males and 4 females. The ages lie between 35 and 71 years of age. Only 4 are between Che relatively young ages of 35 and 41. The period between employment and the development of cancer is always relatively long (between 12-42 years). Short term exposure to the dust Is pom-rally followed hy a long dust-free interval, which would tend Co tndice.io that the action of the dust, if there be such, gradually leads to the development of cancer.