This book offers an overview of the biological basis of 26 different solid cancers for scientists and oncologists to understand the clinical challenges. The book provides a quick, simplified, and updated review of the present genetic or genomic medicine era. With genetic and molecular details to enhance understanding of biological mechanisms underlying disease pathogenesis and treatment response, each chapter covers epidemiology, risk factors, classification, pathophysiology, genetics, and treatment of solid cancers. This book is a beginner’s guide for life sciences and medicine graduate students, fellows in training, biomedical sciences researchers, principal investigators, clinician-researchers and oncologists.