For 5 years, 121 general practitioners (GP) had a one-week course of continuing medical education, organized by the League against cancer, by groups of five, in oncology university services. A few years later they were asked, through a postal questionnaire, about their appreciation of this course and its consequences on their practice. Seventy six (55%) answers indicate that, except for two GP, such a course was considered as very valuable. They think it was useful to improve their clinical expertise and to reduce radiological and biological investigations. Their relations with patients, families and oncologists had been improved. They hope such an experiment will continue. Limits and difficulties of this experiment are briefly underlined.