Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Left PICC is seen with tip now in the upper SVC and the current exam . Linear opacity at the left lung base most suggestive of atelectasis . The lungs are otherwise clear . The cardiomediastinal silhouette is normal . No acute osseous abnormality is detected . No free air seen below the diaphragm .
    OUTPUT:
    
No acute cardiopulmonary process .