Document 06LV5NZa746OYmj0L0koqpK5d

FILE NAME: ALCOA (ALC) DATE: 1955 Sept DOC#: ALC037 DOCUMENT DESCRIPTION: A bstract-Journal Article - Industrial Hygiene Digest KwniMinifiifi'i -/ * - Ii Industrial Hygiene Digest V@U-H--u. INDUSTRIAL HEALTH NEW S LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL . :^ //\ TOXICOLOGICAL. LEGAL--decision*ud trasd* ' j 1. f?*5 j J J Sg : SE(PVToELM1B9E, NR,o.199)35 INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE +400 FIFTH AVEN UE PITTSBURGH 13. PA. 0 HMRH-nin r?fjp Industrial Hygiene Digest September, 1955 the com m on aspects of tuberculosis w ere seen instead of the features ch aracteristic of silicotuberculosis. It is suggested that the term " tuberculosilicosis" be used for such patients. Active tuberculosis w as found in eight patients with stage 3 silico sis, but m ost of the patients in that stage did not show signs of tuberculosis or other in fection. The authors conclude that the transition from the nodular to the m assive stage can take place without the superim position of in fection. -- Cond. from J. Am. Med. Assn. M ortality from Lung Cancer in A sbestos W orkers. R. Doll. B rit. J. Ind7-MecL ITj"""8lT86 (AprTT^SSX In necropsies of 105 persons who had been employed at an 0 a sb e sto s w ork s, lung cancer w as found in 18 in stan ces. In 15 cases a sb e s to sis w as also found. T hese 15 w o rk e rs w ere employed at le a st U - nine years before 1923, when dust control regulations became effec tive. An additional 113 m en who had been exposed to asbestos dust for 20 years w ere followed up and their m ortality was compared with that of the whole m ale population. Thirty-nine deaths occurred in the group w hereas 15.4 w ere expected. The excess was entirely due to ex cess deaths from lung cancer (11 against 0. 8 expected) and from o ther resp ira to ry and cardiovascular d iseases (22 against 7.6 expected). All the cases of lung cancer w ere confirm ed histologically and all w ere associated with asbestosis. From the data it is concluded that lung cancer is a specific hazard of asbestos w orkers and that the average risk among m en employed for 20 years or m ore has been of the o rder of ten tim es that experienced by the general population. The risk has becom e progressively less as the duration of employment under the old dusty conditions has decreased.-- Cond. from author's summary P rim ary Lung C ancer in South W ales Coal W orkers with Pneum oconiosis. W. R. L. Jam es. B rit. J. Ind. Med. \Z, 87-91 (Apr. 1955). P rim a ry lung can cer w as found a t n ecro p sy in 3. 3% of 1 827 South W ales coal m in ers and in 5.4% of 1, 531 South W ales non-m iners. In 12 cases with m assive pneum oconiosis the tum or was in the m ass, o r touching it, in five. In the other seven the tum or was rem ote. Lung can cer in South W ales m iners is sim ilar to that in non-m iners with re -' spect to the ages at death, the distribution of the histological variants of the tum or, and the distribution of m etastases. The significance of these findings is discussed. A ttention is draw n to the difficulty of diagnosing lung cancer in the presence of m assive pneumoconiosis. -- A uthor's sum m ary 03120030 o 32.