Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . A right subclavian central line terminates at the cavoatrial junction . Median sternotomy wires are intact . There is left basilar atelectasis . The lungs are otherwise clear without focal consolidation , pleural effusion or pneumothorax . The cardiac silhouette is top normal and pericardial calcifications are noted .
    OUTPUT:
    
Left basilar atelectasis , otherwise no acute process .