A child with acute respiratory distress shows hyperinflation of unilateral lung in chest X-ray. Most likely cause for above presentation is:
Foreign body aspiration is the commonest cause of acute lung collapse in a child. Ref: Chest Radiology: The Essentials By Jannette Collins, Eric J. Stern, 2007, Page 196
Staphylococcal bronchopneumonia
Aspiration pneumonia
Congenital lobar emphysema
Foreign body aspiration