Document 9LeymzBQzbNo13x4LwwnBXnK6

02/13/2003 THU 10:44 FAX 312 996 1899 UIC LHS CHICAGO of tiie Lung in EBS STEWART, LLD. ngland uable method of lse. This form of oe reproduced in of the carcinogen observation that scessful induction jrcival Pottn do it was not until f an etherextract (der occurring in not until 1937 ancer in dogs by hjgMmcceeded in (Haerti known for cenjection of cobalt tal work. f hazard in any industry of the ; of suspected or nts for effecting Cancer Control his presentation to discussion of t seems hardly r form of cancer is significantly on. This is not e not available, where there is u d. 4. forbid Anatomist Royal Infirmary, of Leeds. Feb. 1965 occupational cancer 127 TABUS 1 List of Some Substances Causing Canchb, Industbt Concisunnd, ano Sits of Cancer Substance ludutof Site ol Cancer Proof Industrial Zmreonetrai-l Mineral8 Arsenic Chromium (ore) Nickel Silica Asbestos Iron (hematite) Beryllium. Sheepdip manufacture and usage Electroplating, tanning, dyeing Chemical manufacturers Stone blasting Minnnt and users Minors Fluorescent lamps 8km, lung Respiratory, usually lung Respiratory Lung Lung Lung Lung, bones Doubtful Doubtful Doubtful Doubtful + + 0 0 0 0 0 0 0 + Unknown Pitchblende miners Lung +0 Oils Lubricating Petroleum Pitches Soot Tar Mule spinners Refiners Chimney sweeps Road workers Skin Skin Skin Skin ++ ++ + ++ Rays Aclinic Farmers, sailorB Roentgen Scientific personnel Luminous paint (ra- Dial painters dium) Skin, exposed sites Skin, exposed sites Skin, exposed sites + + + + + + Organic chemicals Dye intermediates Chemical manufacturers, Bladder and usarg ++ A very significant fact has been observed by many workers and has been emphasized by Kennaway (1950)." The "amount" or incidence of cancer in any given population does not vary greatly, as regards either sex or race, but the proportions of the different "forms" or sites of cancer may vary greatly. For example, there is a high rate of carcinoma in organs peculiar to the female, in contrast with the high rates in lung and stomach in the male. Similarly, primary carcinoma of the liver is high in the Javanese in Sumatra, but insignificant in European populations. "There appears to be a general law that when in a given population the incidence of cancer in one particular organ is markedly increased compared with another population, there is then a compensating decrease in the