Background: Early gastric cancer, first described in 1908, became of c
linical importance only after the introduction of fiberoptic gastrosco
py with simultaneous biopsy. It was the purpose of our study to seek f
or the concrete changes which took place in the distribution of early
cancers after the introduction of these diagnostic tools. Material and
Methods: Case records and histological slides of all 132 patients wit
h early cancers among the 1,748 gastric cancers operated in the Robert
-Rossle-Klinik were investigated for size of the tumor, results of dia
gnostic methods, and surrounding mucosa. Results: Gastroscopy with sim
ultaneous biopsy led to the detection of new types of early gastric ca
ncer, smaller cancers, and cancers restricted to the mucosa. Investiga
tion of the surrounding mucosa led to the detection of a remarkable pr
oportion of patients with pangastritis. 6 of 8 patients with early gas
tric cancer and a positive test for parietal cell antibody had pangast
ritis, too. This is illustrating the fact that both endogenous and exo
genous factors are operating together in the pathogenesis of gastric c
ancer. Conclusions: Gastroscopy should not only be used to explore com
plaints of patients, but also for the detection of early cancer and pr
ecancerous lesions in all persons examined. Persons with autoimmune ga
stritis and with histologically proven pangastritis should be included
into an endoscopic follow-up program.