The continuing success of the VICC's Manual of Clinical Oncology and the continuing refinement of our educational objectives in cancer designed for graduating medical students and young practitioners, cou pled with significant additional knowledge in the cancer field have allIed to the decision to publish a Fourth Edition. The collaboration of the World Health Organization (WHO) and the Pan-American Health Orga nization (PAHO) in our international and regional conferences in cancer education and the development of courses using the Manual as a basic resource have aided further definition of...