This book highlights the current importance of aortic aneurysms, their clinical presentations and methods of management. The book focuses on different segments of the aorta from the aortic root to the abdominal aorta. Not only are the clinical and pathological conditions included in this book, but also the basic immunopathology of the aortic aneurysms are thoroughly discussed. We highlight the importance of the understanding the basic pathophysiology of the aneurysm formation, presentation and therefore management of each pathology. The presentation of each aortic segment aneurysm varies depending on the acute pathology. There are often such cases when these aneurysms are found accidentally while the patients are being scanned for other non-aortic conditions. Throughout the chapters of this book, we have aimed to simplify the understanding of the aortic aneurysm, its clinical manifestations and methods of diagnosis and options of surgical interventions in each case. This book serves as an important tool for those who have a special interest in aortic surgery.