(A) A 35 year old man with Wegener's granulomatosis. (A) A 35 year old man with Wegener's granulomatosis. The chest radiograph demonstrates multiple, bilateral cavitating nodules and a left apical mass. (B) HRCT demonstrates a thick walled cavitating mass in the left upper lobe with spiculation and pleural tags (arrowheads). A feeding vessel is seen running into a smaller nodule anteromedially (arrow). A G Rockall et al. Postgrad Med J 2001;77:621-638 Copyright © The Fellowship of Postgraduate Medicine. All rights reserved.