The purpose of this study is to analyze the decision-making practices of cancer doctors, including how those decisions impact the identity construction and sensemaking practices of patients. I look at how doctors make ethical decisions regarding patient interaction and treatment by examining processes of decision-making. More specifically, I study how doctors navigate personal motivation and institutional structures when making their decisions. I also examine how doctors make decisions regarding the type and amount of treatment to provide to patients, as well as how doctors negotiate the risks associated with treating cancer patients. The project examines the ethical issues that exist within the medical field, including the ethical principles which govern doctor-patient interaction. It studies why ethics is important to the medical field, how doctors confront ethical dilemmas, and how their decisions may impact patient health. In addition to this focus on ethics, the project considers how patients are impacted by doctor decisions and interaction, and whether or not patient identity and sensemaking practices are affected by the ethical decisions of doctors. I will focus specifically on end-of-life scenarios involving cancer diagnoses.