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What is A girl child with fever, cough, dyspnoea with x–ray showing right lower lobe patchy consolidation, for which treatment was given. After 8 weeks symptom improved but x-ray showed more dense consolidation involving the whole of the right lower lobe. What is the next best line of investigation ? and explain in detail?
A history of recurrent pneumonia in the same lobe or segment or slow resolution (> 3 months) of pneumonia on successive radiographs suggests the possibility of bronchial obstruction and the need for bronchoscopy.