Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . EKG leads are present overlying the patient . Lung volumes are somewhat low though allowing for this the lungs appear clear . No convincing evidence for pneumonia or edema . No large effusion or pneumothorax . Likely present is mild left basal atelectasis . The cardiomediastinal silhouette is stable . Imaged bony structures are intact . Right and left AC joint arthropathy is incidentally noted .
    OUTPUT:
    
Mild left basal atelectasis . No convincing signs of pneumonia .