Respiratory Medicine MCQ for NEET PG & FMGE

A 30-year-old woman presents with chills, fever, chest pain, cough, and shortness of breath for 5 days after getting caught in the rain. She has a history of tuberculosis. Physical examination reveals dullness on percussion and crackles in the left lower lung. Sputum is negative for Mycobacterium tuberculosis. White blood cell (WBC) count is 32×10<sup>9</sup>/L. Chest X-ray (CXR) shows a large dense shadow in the left lower lobe. The most likely diagnosis is:

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