The twenty-seventh volume of the GI Surgery Annual covers diverse topics pertaining to gastrointestinal (GI) including hepato-pancreato-biliary (HPB) surgery. Each chapter provides an in-depth review authored by an expert with substantial experience and a strong publication record in the field. The author draws on both a thorough literature review and their own clinical experience to add a practical dimension to the chapter. Unlike standard textbooks, this volume answers real-life dilemmas surgeons frequently encounter in their clinical practice, such as when to operate, the safest and most effective approach to use and how to manage difficult surgical scenarios. The book also addresses controversies as well as recent advances in the field.

The book is a must-read for residents pursuing MCh/DrNB courses in Surgical Gastroenterology/GI Surgery or HPB Surgery who are preparing for examinations or want to strengthen their clinical knowledge. It is also valuable for MS/DNB General Surgery students seeking a deeper understanding of a topic than what is typically offered in standard textbooks.

Prof TK Chattopadhyay is Professor Emeritus, Department of Gastrointestinal Surgery and Liver Transplantation, All India Institute of Medical Sciences, New Delhi, India. He initiated this series 26 years ago and has been the editor-in-chief since its inception. He has also been a Senior Consultant and Professor and Head, Department of HPB Surgery, Institute of Liver and Biliary Sciences, New Delhi. He has been the Secretary and President of the Indian Association of Surgical Gastroenterology.

Prof Peush Sahni retired as Professor and Head, Department of Gastrointestinal Surgery and Liver Transplantation, All India Institute of Medical Sciences, New Delhi, India in November 2023. He presently works as Senior Consultant (Head Academics, Centre for Liver and Biliary Sciences), Max Super Speciality Hospital, Saket, New Delhi. He has been the editor since the second volume of this series. He has been the Secretary and President of the Indian Association of Surgical Gastroenterology.

Prof Sujoy Pal is Professor and Head, Department of Gastrointestinal Surgery and Liver Transplantation, All India Institute of Medical Sciences, New Delhi, India. He serves as the Secretary of the Indian Association of Surgical Gastroenterology. He has been the editor of this series since 2005.