Gastric cancer refers to a type of cancer that grows from the lining of the stomach. There are different types of gastric cancer such as gastrointestinal stromal tumors, adenocarcinomas, carcinoid tumors and lymphoma. The major symptoms of gastric cancer include indigestion, and pain or discomfort in the stomach. The cancer may spread from the stomach and can affect other parts of the body including the lungs, lining of the abdomen, liver, lymph nodes and bones. The risk of developing gastric cancer can be influenced by factors such as nutrition, age and stomach disease. The diagnosis of this type of cancer is typically done through a biopsy performed during an endoscopy. Following this, medical imaging may also be performed to ascertain whether the disease has spread to other parts of the body. The treatment options of gastric cancer include surgery, radiation therapy and chemotherapy. This book strives to provide a fair idea about gastric cancer and to help develop a better understanding of the latest advances in its clinical management. For all readers who are interested in this medical condition, the case studies included herein will serve as an excellent guide to develop a comprehensive understanding.