2 year old child developed sudden bouts of cough, breathlessness and respiratory distress after swallowing coins during playing. Chest x-ray was done. what is the probable diagnosis: (A) Pneumonia on Right side, (B) Obstructive emphysema on left side, (C) Bronchiectasis, (D) Pleural effusion
Answer is B. Chest x-ray shows increased lucency on left side, suggesting hyperinflated chest on left side.