Bilateral ill-defined nodular opacities throughout both lungs with more confluent consolidation in the left upper lobe. Several of the nodules have apparent central lucency which is suspicious for cavitation. The lung volumes are reduced. There is no pleural fluid and the cardiac and mediastinal contours are normal.
COP may explain the reduced lung volumes and more peripheral confluent areas of consolidation, particularly in the left upper lobe. The possibility of cavitating nodules is however not easily explained and in the immunocompromised patient consideration to invasive aspergillosis or other atypical infections should be given.