Toxicities have been consistent undesirable companions of every form of radiation and drug cancer treatment regimens.Â{u026E} addition to the potential for toxicities to devastate patientsâ€{u0C75}ality of life, they generate huge incremental financial costs, and sap patientsâ€{u0862}ility to tolerate definitive cancer therapy.Â{u2820} And every new drug or biological has come with new side effects. Â{u2808}Historically, regimen-related toxicities were viewed as the inevitable cost of treating cancer.Âæt this may be about to change. Discoveries in the past dozen years have painted a new picture of the pathobiology of almost all regimen-related toxicities.The mechanistic complexities that underlie radiation- and chemotherapy-induced tissue injury or systemic symptoms have been pieced together in an incremental sequence which now provides multiple targets for effective toxicity interventions. This book brings together, for the first time in a single volume, the most current information regarding both general principles guiding current thinking about the pathogenesis of regimen-related toxicities and the specific biological underpinnings of the most common side effects of cancer therapy.The contents provide information that is essential to clinicians and basic and translational scientists interested in cancer therapy and its toxicities