Announcing the second volume of DeVita, Lawrence and Rosenberg's groundbreaking series, Cancer: Principles & Practice of Oncology—Annual Advances in Oncology. This series of annual volumes focuses on the most significant changes in oncologic research and practice that have taken place during the preceding year. Each volume identifies scientific and clinical areas in oncology that are rapidly changing and show a high potential for affecting the management of cancer patients in the future. These areas may reflect current controversies in oncology and every effort is made to provide clear direction for the practicing oncologist.