Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is borderline enlarged . The aorta remains tortuous . The mediastinal and hilar contours are otherwise unchanged . Pulmonary vasculature is not engorged . There is minimal streaky opacity in the left lower lobe compatible with atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
Left lower lobe atelectasis . No focal consolidation to suggest pneumonia .