Document RbyX0q13yyjN4ZrxVxqpmaz

I Tl fUAL HEALTH {il'-'C CAXCER l.y ASBESTOS MIXERS , at least 50,000 Taia.r. 11.--Xumber of Luu<l <\iii.vr I'eolhx mid Rule f,r llujim Mun-V.-orj throughout the i unted that this istant in the 20 Countkt e first case of was reported, .rs of exposure and this figure Csxmtr ,Stth| MAdJrtmx|u <'smilr UpioftritlnjrVoWtigtJir(WVtemtlr* fiottnw of UuHwclrsrUht "uttmnr moiitlpi ittfnural et Ulo <to Jtt Adoll >13* |*n|iubikm IW2 tuC..nimm fca.U l.lW^w t.imjtfi \KC 1 1 3 3 him i a IU VJD sir T Matt lumi (*stMvf |k*nilu wt a t* 4 314 SM lM l*S a 14 u SO *3 (93 3*4 i i u 30 tw IfcA loss 4 in V u; - MI 334 roximatdy -150 Mtb tnifM Ibil oil oak* tux: nnm druitu mtitmil after n 3k asbestosis re- .Total li 41 49 UOI Iitnil\ru<|vtr- U.t> *.# 3U *U period. This immediately surrounding the nslk-sios-proXXi, which is at ducing areas is practically identical with that mg cancer rate t 0f eight counties selected for comparison. r workers ex- . While Mcgiiuiic County lias a rate nearly t much greater ; ^ice that of the combined eight selected d population. -j counties, it is lower than the rate for the t Countiff Ad- ' Province, and considerably lower than the suggestive f cancer of the lung and in cluded such d i a g ii s c s as mediastinal lymphosarcoma, nu-soltu-tujma, oancvr of die leg with imlaslascx to lung, abscess of lung, and cancer of the jmnervas. One other was diagnosed on the basis of x-ray only. In addition, there arc now living four cases in icing Areas om; We for Montreal. The figure for Montreal o compare Inns ltrould certainly be higher except for the c counties stir- (very low iiumliers of dentlm reported for dng areas with 11950 and 1951, and it would appear that n which no as- Jin those years some error in reporting has -ide, die rates 1undoubtedly been made. On the basis of the of figures for othcr years. 1950 and 1951 deaths would be `55. The eight Jecpected to be about 200 greater. This rtson were Ar- would result in a rate of 40 per 100,000. *nagny. Port- j| The only possible conclusion from this du-Loup, St. jcomparison is that there is no evidence that mainly because jihe persons who live and work in the counaphic distribu- {ties surrounding and adjacent to the as. The counties Jbestos-producing areas have any greater oximity to the {incidence of lung cancer than those who ibaska. Tlcaucc, -Ifive elsewhere in the Province, egantic, Rich- | Comment on All Recorded Lung Cancer lfe. Table 22 1Cor, /.0-11117 and IK'ad. among the Asbescancer dcauts iiw Miners.--Although a simple ciumtcra1955 for each jtion of all the known or suspected cases of mortality rate, ]cancer of the lung in these areas has no Uation in 1952. {particular value from a statistical point of son, Megantic 1ev'r. '* * * interest to summarize such irately, as has joses fr the record. There were nine deaths also the Prnv- iPr`f,r *" the Ijcginning of die lime period tos-producing" !covered by the study, including one in which of its unique llhe 'vas mediastinal lytnphosar- real et Isle de jma\ D"rinH the period covered by this which the diagnostic evidence is strongly suggestive.of lung cancer. This is a total of 33 cases of all tyjws, including 1(1 "sus pected'' but unproved cases, and 4 that arc still living. The remaining 19 constitute the total of proved cases of cancer of the lung among the asbestos miners since 1940. The proved cases averaged 59 years of age at death; and varied between 37 years and 63 years. Their working span covered peri`od*s varying f'rom a ininiiuuin of* "14 years to a maximum of 37 years. Only three men had less than 25 years of em ployment in the industry. Seven among those on whom such information is avail able had a weighted exposure placing them in Category III. and six worked in an ex|>osurc represented by Category I. There were only 17 among these proved lung cancer cases in which we have in formation regarding the presence of as bestosis. Asbestosis was present in nine, although it was minimal in two. Two path ologists disagreed regarding its presence in another. At least seven of the 19 proved lung cancers, therefore, were not accom panied by asbestosis. rder to provide jnvcs*ijjation, thvre were nine proved roses .jaml three suspected cases in the cohort, table that the !'n,r<`uk,|> 1956 and to date in 1957. them eight counties ciBht six o( which were merely ' Summary and Conclusions Interest in the epical imt of whether there may be an association between lung cancer d. ir. June, I95f 'B'am~Tn,a'> M1) HI ' it : ' \i