Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views the chest provided . Pectus excavatum deformity of the sternum and spinal hardware noted . Lung volumes are low . Allowing for this the lungs are clear . Cardiomediastinal silhouette is stable . No acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary process .