Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Faint linear densities in the lower lungs likely represent platelike atelectasis . There is no focal consolidation concerning for pneumonia . No large effusion or pneumothorax . Emphysema is present . The cardiomediastinal silhouette appears stable with aortic calcifications . Scoliosis involving the lower thoracic and upper lumbar spine is unchanged .
    OUTPUT:
    
No signs of pneumonia .