This book aims to provide specialists and practitioners with a reliable source of information on all aspects of Peyronie disease, which is too often still considered a mysterious condition. The focus is in particular on those aspects of the disease that are most hotly debated, including etiology, risk factors, nosology, natural history and medical therapy. Clear guidance is also provided on surgical techniques, with explanation of why and when to apply plication surgery, corporoplasty and plaque surgery and the best approach to complicated cases. Throughout, strenuous efforts have been made to ensure clarity and simplicity of expression and ease of consultation. While clear international guidelines are lacking, this has allowed the authors to devote much space to personal ideas, conveying the fascinating and sometimes conflicting nature of this field of medicine and, hopefully, stimulating further research.