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Like
other
cases
of
cancer, the cause
of carcinoma of
esophagus
is
complicated,
and
consists
of a variety of factors.
The
majority
of
etiological investigations
show
that
improper
food could induce
or
propagate
the
occurrence of carcinoma
of esophagus.
Esophagus
is a
transit-tract,
the
chemical
and
physical
stimulations
of
food
may
result
in
pathogenic effects
on
it.
Moreover, carcinoma
of
esophagus
has a special
regional distri-
bution,
and
its
morbidity
is
higher in certain districts.
These
are be-
lieved
to
be related
with
the
diet,
the
condition
of
living, and
the
geog
ra
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