The perspective of urologic oncology in the twenty-first century is present
ed regarding detection, treatment, and prevention of cancer. There is incre
asing importance of a cancer information network Biotechnology and medical
engineering based on advances in computer science will be the two key techn
ologies related to such advancement. Ethical, legal, social, and economic i
ssues provoked by the technologic advances will increase in gravity at the
same time. Balancing humans in terms of scientific technologic developments
and state of mind will be a serious issue.