Book excerpt: This essential book is a comprehensive yet practical handbook on oncologic emergencies containing the important and current information on treating cancer patients in acute care settings such as emergency and urgent care departments and centers. A concise and evidence-based guide, it is the go-to resource for any acute care medical practitioner treating cancer patients, demystifying the processes of evaluating, diagnosing, and managing emergencies that often arise in the cancer patient population. The first part of the book offers an overview of cancer, anti-cancer treatment and pain and palliative care in the emergency department. It then moves on to provide a systems-based approach covering neurologic, cardiovascular, pulmonary, gastrointestinal, genitourinary, respiratory, lymphatic system, and integumentary cancer complications. The book also discusses the side effects of cancer treatments such as pain, delirium, dyspnea, and immunotherapy related adverse events, and importantly helps to bridge the gap between oncologic advancements for emergency medicine specialists.