unifrib oktttrs ocnMir - Legacy Tobacco Documents Library

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of the bronchial tree, whore tho concent r atien of oigarette
smoho is not nearly so „roat as in t :b.c trachea and /.argor
branchos, Why?
http://legacy.library.ucsf.edu/tid/hly24f00/pdf
1 do not bol.ieve that there has been nearly so great
an incroa .se in cancer off thc lung us may at fi>st e.ppoar .
For oxample, some of the roaeonh Ror the inorI aso in veportod
caeos of cancer of the lung aro as follows : (1) a greater
interest in the subject after Ar . Oraham :.ured the first
case by removal of a lung (previously dt was always fatal) ;
(2) grcater sNCill l in Girect examinatirnb of the bronchi by
the uso of the bronchoscope ; (3) groxtly refined x-ray
techniques ; (4) the u>o of the pap[ .nicolnou smoar, which
is the atiero8copi.e study of cells i.n washings and sputum
from the bronchial tree ; (5) the creat refinements in
anesthesia wihich mahe opon oxposurb of the lunge and
exploring of the chest a relative : .y innocuous procedcn e ;
(6) mor.e wi .dosproad facilities foc carefully and thoroughly
investigated post-mortem examin .aticns, such as wore common
in 13eri.in at a much on .rlier tLio ; and (7) the increasing
ago span oP the populati .on in ; lcinnra.l, bringing more
patients into the cancer ago . YncrenEed awareness of the
die,caso and the Improved mothods : of diaguosi.s, when coupled
with the inereasing ago span of the population, may account
for most, if not all, of the increase in cad;es reported
dnai.nG recent years . In Germany, where careful post-mortem
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