Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Bibasilar atelectasis and bronchovascular crowding limits evaluation through the lower lungs . No definite signs of pneumonia or edema . No large effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . A chronic deformity involving the mid shaft right clavicle is again noted .
    OUTPUT:
    
Basal atelectasis , otherwise unremarkable .