In this book, Anna Leahy takes readers on an intellectual adventure around cultural concepts and attitudes that shape ways humans research scientifically, treat medically, and talk socially about these things, tumors. With the likelihood that one in two men and one in three women will develop invasive cancer, tumors have the power to redefine our identities and change how we live and interact with each other and the world around us. With poetic verve and acuity, Leahy explores why and how tumors happen, how we think and talk about them, and how we try to rid ourselves of them. Tumor is about the object that is you.