For us, the diagnosis of a cancer is now as before an extraordinary challenge. This is reflected in the great efforts we are making to search for the causes of this disease and to find new and better healing methods. Since its foundation, the German Cancer Research has raised enormous sums of money in order to finance this research. Within the last few decades, the science of psycho-oncology has been developing, too, and it has profited from this scientific impetus. Psycho-oncologic departments have been built at Heidelberg and other tumor centers, and extensive retrospective and prospective studies on epidemiology have been conducted in order to investigate the psychic background of the cancer disease. However, the personal behavior towards cancer patients is now as before a special and rather problematic task for the physician. The suffering caused by such a disease confronts us with our own anxieties and makes us aware of our helplessness in view of the psychic situation of the patient which is often characterized by hopelessness and a ceased dynamism.