Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Previously seen right PICC is no longer visualized . The lungs are essentially clear noting linear opacity at the base on the lateral view suggestive of atelectasis . There is no effusion . Cardiomediastinal silhouette is unchanged as are the osseous structures which are notable for posterior thoracolumbar spinal fixation hardware . No free air is seen below the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .