Fig. 11From: Clinical and radiological features of idiopathic interstitial pneumonias (IIPs): a pictorial reviewRB-ILD pattern in a 52-year-old smoker patient. Poorly defined centrilobular nodules (white arrows), due to peribronchial extension of the infiltrate, are uniformly disseminated through the upper lobes. Other CT features very frequently encountered are centrilobular emphysema (white arrowhead)Back to article page