Document 15dwEJ7gYbMZE4Kzvp97rd4x5

Slllcceis - Ash steals MBKRAKDUM ' ciS<3-2S62 Johns-Msnville Ccrp, under date of December 1, 1950 la Sonerville, 3ev Jersey. Is defense of the petition of Mr. John Haines alleging asbestosis had Dr. Pendergaat of the University Eoapital, Kiiiadeiphis, Dr* Bristol, radiologist, Dr. Arthur 7crvald of Trudeau Foundation and Dr. Lanza of Bellevue Medical Center testify. Dr. Fendergast stated that asbestosis vas lung changes produc ed hy inhalation of magnesium hydrated silieate. These changes are probah y due to the larger fibers (contrary to silieesis) vhich get into the respiratory bronehial nodes and cause outpouring of cells. The scalier size fiber tended to be engulfed by these cells and at the ease tin: ae up a fibrosis collar around the scalier bronchi and eight also set up a: infectious field is the lung. The changes occur not only in the lung, primarily in the lover lung field, (vhere adjacent to coring parts), bu` also the pleura and the covering of the heart. The x-ray suet shov fibrctic changes and canifest thickening of the pleura and the covering the heart, and generally vas associated vith right heart failure. The vertical diameter of the chest vuuld be less and there vouid be clinicai signs of shortness of breath. For dia^osis it vas necessary to have shewn (1) history of exposure. (2) exposure of abnormal accents of dust, (3) positive clinical findings - dyspnea. (M positive x-ray findings indicating a ground-glass appearance particularly in the lever lung fields. There are generally no nodular shadows unlecs there m.y have been silica present in the dust. Diff erentdating, he stated that the x-ray appearance of silica C) even nodular distribution. (2) conglcaerate easses due to cohesion of nodules, (3) distribution in the upper tvo-thirds of the ehest. (M increase in vertical diaaeter of the ehest. (5) questionable presence cf right heart failure. He stated he did not Imov if there vas individual Idiosyncrasy to pneuncconiosls. "Ti* Dr. Arthur Vorvald testified as a pathologist and stated that the x-ray appearance of asbestosis is characterized by (1) unifem shadovs at the lever one-third of both lung fields vhich say extend to the aiddle; (2) there say be involveaent of the pleura, the sac about the heart and the diaphras of tne lung. He stated there is no correlation betveen the sputum and vhat sight cose on in the lung itself due to the bodily defenses, particularly in the cucous nenbrance of the throat and trachea. He states his studies of 60 of the individuals exposed to fcaovn concentrations of dust contract asbestosis. me cinii dr~uostries INC. DID Noat nr* 8Y PPG INdTsTOesN,ncE/UJTH' | BB 0024019 | Asoestosis is a clinical entity produced by the iahalat uisasss;1 dust over a prolonged period of ties-pathologically, by tbe production of fibrous tissue in the lung clinically, by the production of shortness of 'w'-- '' ` breath, coughing, diminished vital capacity of the lung and by the definii et*< ^ * '*^e _ pattern pto&Ztff? in the n-ray fils. This patters can be oescribed as lsvo #* the lover parts of the lung seating-up -a *paTTem which cair-be described ap 9 ground-glass appearance. Also involves the pleura producing a thlchemng involves the area vnish covers the heart tending to involve the lung wr.ich covers the heart producing a picture which we call "shagging" so that the heart instead of being rounded la irregular. u* * r ^^ 4 * i DOCUMENT WAS NOT A RECORD OF INDUSTRIES, INC. 010 NOT COME FROM FILES AND CANNOT BE AUTHENTICATED 'Mru icn-Burc; jnc_ T BB*0024019