[High-resolution CT (HRCT) of the lung in Wegener's granulomatosis].

HRCT of the lung and plain chest X-ray were performed to reveal pulmonary manifestation in primary diagnostics or reevaluation of 35 patients with Wegener's granulomatosis. Pleural and parenchymal pathology was detected in chest X-ray of 20 (57%) and in HRCT of 30 (85.7%) patients. Granulomas with and without cavitations and with smooth or spiculated margins were deemed pathognomonic. Nonspecific findings were infiltrates, thickened interlobular septae and fibrotic changes of parenchyma and pleura. Ground glass opacities, traction bronchiectasis and small cysts were only visible on HRCT. As expected HRCT proved to be more sensitive in detecting subtle lung alterations than plain film chest X-ray. It helps to differentiate acute inflammatory and thus potentially curable processes from chronic fibrotic changes in Wegener's granulomatosis.