Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The PICC line terminates 2 .9 cm above the carina . Right IJ central venous catheter is in the lower SVC . Lung volumes remain low and heterogeneous bilateral airspace opacities have not substantially changed . There is no large pleural effusion or pneumothorax
    OUTPUT:
    
Persistent heterogeneous bilateral airspace opacities , consistent with multifocal pneumonia .