Congenital lobar overinflation
Term infant. Increased work of breathing.
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There is hyperlucency and overinflation of the left upper lobe.
This child has congenital lobar overinflation. The left upper lobe is the most commonly involved and as a result of air-trapping, the lobe becomes progressively overinflated. Mass effect on local structures causes progressive clinical deterioration.
Clinical deterioration resulted in the need to excise the left upper lobe which was pathologically confirmed as congenital lobar overinflation.