Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . A right subclavian central line terminates at the cavoatrial junction . Prominence of pulmonary vasculature may be due to low lung volumes and resultant bronchovascular crowding . There is no pneumothorax , pleural effusion or focal consolidation . Cardiomediastinal silhouette appears enlarged , likely due to technique .
    OUTPUT:
    
1 . Right subclavian central line terminates at the cavoatrial junction . 2 . Low lung volumes and findings which may represent mild fulid overload but no overt edema .