Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear bilaterally with increased opacity in the lower lung fields most likely secondary to breast tissue attenuation . The previously seen right - sided PICC has been removed . Cardiomediastinal silhouette is unchanged and within normal limits . The pleural surfaces are unremarkable . No osseous abnormalities are identified .
    OUTPUT:
    
No evidence of infection or malignancy .