The radiological semiology described in this book is established on a syndrome division based on the semiology of the different anatomical compartments of the thorax. This book deals with the main thoracic radiological syndromes, namely alveolar syndrome, interstitial syndrome, bronchial syndrome, mediastinal syndrome, pleural syndrome and parietal syndrome. This book is didactic and pedagogical, richly illustrated, with the help of demonstrative diagrams and is intended for medical students and practicing physicians.