Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuates bronchovascular markings . A right - sided PICC terminates in the mid SVC . A left chest wall pacer defibrillator with single lead is in unchanged position . The right internal jugular Swan - Ganz catheter has been removed . The heart is enlarged which may reflect cardiomegaly , less likely pericardial effusion . The mediastinal and hilar contours are within normal limits . Increased opacity at the base of the right lung may reflect subsegmental atelectasis . There is no pneumothorax or pleural effusion . There is mild prominence of the vasculature likely reflective of a fluid replete state .
    OUTPUT:
    
Right PICC terminates in the mid SVC . Subtle opacity at the right base may represent subsegmental atelectasis . Clinical correlation advised .