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Figure 3. 63-year-old male patient with fever at aplasia following bone marrow transplant for acute myeloid leukaemia. Axial CT scans show follow-up of a nodular invasive pulmonary aspergillosis lesion in the upper lobe of the left lung. (a) A focal nodular lung parenchymal consolidation with homogeneous density is seen in the left upper lung lobe. By appropriate window setting (same window setting as on Figure 1a), (b) central hypodensity can be recognized. (c) Note delineation of the crescent sign, and (d) corresponding cavitation, following successful antifungal therapy.
