Book excerpt: Designed to serve as a comprehensive active learning tool for medical students, residents, and junior attending physicians, Radiation Oncology: A Question-Based Review is geared toward helping professionals quickly and efficiently review a specific topic in clinical radiation oncology. Organized into sections by system and with over 90 chapters covering all the sites and conditions for which radiation is used clinically. This publication covers in detail all the sites and cancer types currently treated with radiotherapy with an emphasis on treatment recommendations and the evidence behind them. Additionally, detailed questions are included on the natural history, epidemiology, diagnosis, staging, and treatment-related side effects for each cancer type.