The case histories of two patients with cavitary pulmonary nodules and the findings at chest radiography are reviewed. The first patient had a connective tissue disease with features common to systematic lupus erythematosus and Wegener's granulomatosis. In the second patient the lung changes developed as part of a drug reaction to carbamezapine and/or phenytoin. The common denominator of the cavitating nodules is probably the presence of granulomas, developing as a sequela of pulmonary vasculitis.
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