Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate clear lungs . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . The left hemidiaphragm is elevated and associated with gastric distention .
    OUTPUT:
    
Moderate elevation of the left hemidiaphragm with patchy left basilar opacity and volume loss , likely atelectasis .