​This book provides a state-of-the-art description of the clinical evaluation, diagnosis, management, and treatment of achalasia, gastroesophageal reflux disease, paraesophageal hernia, and morbid obesity. The prevalence of such diseases is increasing worldwide due to higher awareness and improved diagnosis rate. The text is divided in three different parts, each covering detailed surgical techniques of the main foregut operations: achalasia, gastroesophageal reflux disease (GERD), and obesity. Written by experts in the field, chapters focus on the preoperative work-up, indications, and technical aspects of each operation.