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A 65-year-old man presents with shortness of breath and fever. A chest X-ray is provided.

Shortness of breath

1. State the main pathology demonstrated. 1 mark

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2. List three radiological abnormalities to support your diagnosis. 3 marks

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3. List three differential diagnoses for this problem. 3 marks

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4. List and justify five further investigations you might perform to establish the diagnosis. 5 marks

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