Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Overlying EKG leads are present . Underpenetration somewhat limits assessment . There is minimal linear density in the region of the left lower lobe which may represent mild left lower lobe atelectasis , difficult to exclude an early pneumonia . Right lung is clear . Cardiomediastinal silhouette is stable . No acute bony abnormalities .
    OUTPUT:
    
Subtle streaky opacity in the left lower lobe may represent atelectasis versus early pneumonia .