This very interesting book gives you the oppurtunity to learn about rare and unique surgical diseases, procedures and complications; it mainly discusses the different modalities used for the diagnosis of surgical diseases, surgical management, as well as, the possible complications related to them. It also introduces new surgical and non-surgical approaches for appropriate management, and new thoughts about rare Gastrointestinal diseases. Treatment of rare surgical pathologies is usually highly challenging for the treating surgeons, who are struggling on a daily basis. This book may add knowledge and experience, making the treating physicians familiar with forgotten diseases and complications. Ever heard of successful conservative management of spontaneously ruptured liver hydatid cyst? Huge pancreatic pseudocyst as a complication of COVID-19 infection? Heterotropic pancreas of the gastrointestinal tract is usually not asymptomatic?... and more rare and interesting surgical cases, that have never been reported before. These cases will broaden your field of thoughts, and come up with accurate diagnosis and treatment. "behind every successful project in life, there is a great woman"- I would like to dedicate this book to my lovely wife- Arij Khuri- for being a partner for a successful life.