Twenty years have passed since I became a professor in the First Department of Pathology, Hiroshima University School of Medicine. It is my great pleas ure that Molecular Pathology o Gastroenterological Cancer-Application to Clinical Practice has been published by Springer-Verlag Tokyo to commemo rate the 20th anniversary of my professorship. Seeing the academic achievements of our department during these 20 years, I am confident that we could establish a department of oncology to research the pathogenesis of human cancer through systemic application of a variety of molecular techniques. We...