Pictorial review: Thoracic involvement in connective tissue diseases: radiological patterns and follow-up

Connective tissue diseases (CTDs) are a heterogeneous group of inflammatory diseases derived from an immunologic deregulation affecting various organs. A thoracic involvement(pulmonary, pleural or mediastinal)can be frequently found; its frequency and expression depends on the type of disease, and may induce an extremely wide range of abnormalities (1-3).