The Requisites in Gastroenterology series clearly and succinctly encompasses all of the core knowledge in the field. This fourth volume covers endoscopy and gastrointestinal radiology, emphasizing differential diagnosis, pitfalls, and evidence-based approaches throughout. A concise, user-friendly format-with at-a-glance illustrations, boxes, and tables-enables readers to access information quickly. The result is an outstanding resource both for certification and recertification review and for clinical reference.Focuses on exactly what readers need to know for certification-no more, no less.Uses algorithms, tables, and boxes to clarify key facts and concepts.Presents "Key Points" at the end of each chapter to serve as checklists of the concepts that must be mastered.Offers practice-proven, authoritative guidance from established experts.