Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well - expanded lungs . There is a minimal amount of atelectasis at the left mid zone . Otherwise , the lungs are clear . There is no pneumothorax or pleural effusion . Cardiomediastinal silhouette is unremarkable . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Unremarkable chest radiographs .