With the increasing proportion of persons above 65 years old and over with a 50% overall risk of developing cancer during our lifetimes, cancer rates continue to play a role in the utilization of healthcare servicesparticularly in the ICU. Currently, very few oncologic critical care texts, journals, subspecialty societies in the field, or knowledge about the current availability of oncologic/hematologic ICUs exist. As such, major knowledge gaps exist about outcomes (e.g., ICU utilization, mortality, costs); healthcare disparities (e.g., racial, geographic); and almost all aspects of intensive care delivery to the critically ill cancer patient. With the aging of the population and projected shortage of critical care providers over the next 25 years, identifying the outcomes of the available oncologic critical care resources is imperative.  To address such disparities, this text seeks to close significant knowledge and educational gaps within the realms of medical care for critically