This book offers a state-of-the-art description of endoscopic and minimally invasive (laparoscopic and robotic) surgical procedures for the treatment of foregut disorders (benign and malignant diseases). The pathophysiology, diagnosis and treatment modalities for gastroesophageal reflux disease (GERD), achalasia, obesity, gastric cancer, and esophageal cancer are thoroughly described. Expert physicians provide the description of the technique with illustrative images in each chapter. The expected audience will include surgeons, gastroenterologists, medical oncologists, as well as medical students. The goal is to have a comprehensive and detailed book, easy-to-read, and with high quality images.