Filling a gap in the paediatric gastroenterological literature, this book gathers lessons learned in the clinical use of Ano-Rectal Endosonography and Manometry in Paediatrics. Unlike in adult medicine, where they are virtually indispensable for specialists who deal with colo-proctology, in paediatrics, endoanal ultrasound and anorectal manometry are still the preserve of very few centres on an international level. This book gathers the outcomes of a Workshop organized at the Centre, entitled "INTERNATIONAL SEMINAR OF ENDOSONOGRAPHY AND ANORECTAL MANOMETRY IN PEDIATRICS", and features contributions by leading European experts.Focusing on the paediatric age group, this volume closes a gap in paediatric gastroenterological literature, and will benefit all specialists who wish to use these methods in the management and treatment of common clinical issues, e.g. chronic constipation.