Figure 2. Helical CT of the thorax: (a) Lung windows demonstrating marked left mediastinal shift and hyperinflation of the right upper lobe into the left upper hemithorax. Cavitation is seen in the collapsed left lower lobe. Mediastinal windows displaying (b) the small left pulmonary artery (long arrow) and (c) calcification in the left lower lobe (short arrow), possibly within the tumour.

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