[Advances of capsule endoscopy. Presentation of the book: "Atlas of capsule endoscopy"].

Capsule endoscopy is a new technique which has meant a real change in clinical medicine regarding diagnosis and therapy applied to many illnesses in the digestive tract. Nowadays, thanks to the different prototypes available, capsule endoscopy can be used to study esophageal, intestinal and colonic pathologies, being mainly recommended for obscure gastrointestinal bleeding. The aim of Capsule Endoscopy Atlas, directed by Professors Herrerías and Mascarenhas, in which the inventors of the technique have also taken part together with some other worldwide re-known experts, is to spread the current step-forwards in this new form of endoscopy.