Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The lungs are hyperinflated . Retrocardiac opacity is best seen on the lateral projection is concerning for an early pneumonia . There is no pneumothorax or effusion . Cardiomediastinal silhouette appears stable . Bony structures are intact .
    OUTPUT:
    
Retrocardiac opacity concerning for an early pneumonia likely in the left lower lobe .