Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Again seen is elevation left hemidiaphragm with left basilar atelectasis . Elsewhere , the lungs are clear . No definite effusion . Cardiomediastinal silhouette is stable as are the osseous structures . Indentation at the right lateral aspect of the trachea at the thoracic inlet , potentially due to thyroid enlargement .
    OUTPUT:
    
No definite acute cardiopulmonary process .