Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC has been repositioned , now terminating in the lower superior vena cava . Heart size is normal . Subtle diffuse interstitial opacities persist , but there are no localized areas of consolidation . Small pleural effusions are present bilaterally .
    OUTPUT:
    
Nonspecific interstitial opacities , which may reflect mild interstitial edema or atypical infection .