Document 27bjmmvB16bKJM21kBRyKMp6

Olu> niiiOfcii^AL AkChiVES jl national museum of health and medicine armed forces institute OF PATHOLOGY * V January 3, 1950 Kenneth V. Snith, M.0. Canadian Johns-ManviHe Co., Ltd. P. 0. Box 1500 Asbestos, Quebec Dear Ken: The hoet of obligations and the pres* of research auties have kept ae from getting cn with the proposed roectgenographic study of your cases for evidence of pulnonary aalignancy in asb^stosis. In discussing the natter vith Paul he, like you, thought it much vorth while. However, I have not as yet identified the mechanics whereby it might be accomplished with the ninimia of tine and effort on your part. As a start, answers to these questions might aid in helping us meet the problem. (1) What is the total number of cases included in your filesT (2) Sbx many such esses have roentgenographic evi dence of asbestosis? (3) Bov many have pulmonary shadows suspicious for malignancy? (4) How many cases are there with proven pulmonary malignancy? (5) Bow many cases have been proven by autopsy? Having your connect concerning those questions would allow us to plan accordingly. It may be that the coses under (3), (4) and (5) ore eo few in number that the respective roentgenograms could bo forwarded here for study. Kenneth V. &aith, M.D. I t<ATtONAf MUSEUM OF HEALTH AND MEDICINE i ARMED FORCES INSTITUTE Of PATHOLOGY ' -2- January 3, 1950 On the other hand, the above procedure might deny us the opportunity to visit you. Ve have been trying to do ao for many months nov and some day I hope it will be an accomplished fact. In the interim and until ve can deliver more personal wishes to you and your dear ones, Madge joins me in every good vish for all good things during the entire New Tear. Sincerely yours AJV:bw Arthur J. Vorveld, M.D Director