A 39-year-old woman with a known chronic illness presented to the emergency department with a 2-day history of chest pain and shortness of breath. On clinical examination she was hypoxic with reduced air entry in the left lung base. Baseline cardiac investigations to rule out ischaemic heart disease were normal. Chest radiography showed a left basal consolidation with pleural effusion. Contrast-enhanced multislice CT of the chest was performed (Figures 1-3). What is the primary diagnosis? What are the thoracic manifestations of this condition?
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