Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the chest radiograph obtained 4 days prior , lung volumes are lower . Diffuse , right greater than left opacities are increased . No large pleural effusion . Heart size is normal . Cardiomediastinal silhouette is not well evaluated . Dense aortic arch calcifications are noted . A left PICC terminates in the right atrium .
    OUTPUT:
    
1 . Right greater than left pulmonary opacities have increased since 4 days prior , compatible with multifocal pneumonia . 2 . A left PICC terminates in the right atrium and could be withdrawn approximately 5 cm .