Document 6bKjB0Qjy3we1kjND0mw7Jzmd

Mt t 4 Vista Chemical Company 900 Throadnaodlo Hotnton, Tuos 77224 Post Offieo Box 19029 /C*,. yt-JLul J.R. Drumwnght, M.D. Manager-Medical November 8, 1991 Roy T. Gottesman Vinyl Institute Wayne Interchange Plaza U 155 Route 46 West Wayne, N.J. 07470 Dear Roy: Bob Hinderer and I have discussed the Wong et al 1991 study entitled "An Industry-wide Epidemiology Study of Vinyl Chloride Workers, 1942-1982". I first heard about the updated report while attending the Denver meeting of the VCSA. The BNA report had addressed some of Wong's conclusions as they were reported in the American Journal of Industrial Medicine. My comments essentially agree with those already presented to you by Bob Hinderer. Namely, the use of the ICD-7 classification lumps all brain and other CNS cancers together; death certificate data without adequate histopathological diagnosis/review and assumptions establishedwithout specific cause/effect, consistency in latency period, etc. Bob's recognition that the authors had apparently failed to have the CMA Panel review the report prior to publication by Wong led to his discussing this with Dr. Shah. It is my understanding that CMA will be addressing this with Dr. Wong. In any event, the study has been published and we must be cognizant of this when new litigation appears. Hopefully, clarification by Wong et al will receive adequate publication as well. SL 107155 I plan to keep in contact with Bob and will keep you posted as well on any events dealing with this issue. Sincerely, --7 ' .v. Drumwright, M.D., FACOM cc: JRD Vi File T. Grumbles R. K. Hinderer, PhD Mgr. Health & Tox. B.F. Goodrich Co. 3925 Embassy Pkwy. Akron, Ohio 44313-1799 SL 107156