Book excerpt: This second edition is an all-inclusive textbook with a unique algorithm-based approach to the evaluation and management of colorectal surgery disease. It examines the thought processes, technical tricks, and decision-making strategies for specific clinical situations. The book aims to utilise the experience its contributors have gained caring for patients with a wide range of colorectal diseases. The technical challenges of managing complex patients and the technical details that make these situations challenging are covered, and evidence and experience-based solutions are offered for surgeons of all levels. This book focuses on providing pragmatic advice and reproducible techniques that can be readily implemented by surgeons of varying experience to successfully treat complex colorectal problems through an algorithmic approach.