Some connective tissue disorders of the lung

Abstract
Summary: Many connective tissue disorders involve the lungs. The same clinical syndrome may be associated with several distinctive types of pathology in different patients. Fibrosing alveolitis is a common feature of a number of different syndromes. An hypothesis is set out in schematic form which may help to account for some of these differences and emphasizes the potential importance of the pulmonary vasculature in pathogenesis.