Cancer is the nomenclature used for a set of diseases that occur due to excessive cell growth in any body part and may infest other parts of the body. It is generally characterized by formation of malignant tumors. These are caused due to various factors such as chemical pollutants, radiations, obesity, genetic inheritance, infections, etc. Classification of cancer can be done on the basis of origin of the tumor. This book aims to shed light on some of the unexplored aspects related to cancer and the recent researches in this field. The extensive content of this book provides the readers with a thorough understanding of the subject. It is a collective contribution of a renowned group of international experts. It will serve as a resource guide for oncologists, researchers, professionals and students.