Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right upper extremity PICC ends at the level of the mid SVC . The lung volumes are low . Diffuse bilateral interstitial opacities and peribronchial thickening , are worse since the prior study . There are no pleural effusions or pneumothorax . The cardio-mediastinal contours are stable , with moderate aortic atherosclerotic calcification .
    OUTPUT:
    
Bilateral interstitial opacities worrisome for viral pneumonia , worse since ___ .