High-resolution CT of lung disease related to collagen vascular disease

The lungs often are affected in collagen vascular diseases. Although these conditions differ in their cause and pathogenesis, the imaging features can be similar. High-resolution CT is the imaging method of choice in the asse ssment of these patients. A CT approach coupled with pertinent clinical fin dings often can lead to a diagnosis of a specific disease entity. This arti cle is a general overview of the most common CT manifestations of collagen vascular disease that affect the lungs.