Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: This exam is somewhat limited due to patient body habitus . A right IJ central line terminates in the lower SVC . A presumed pacer projects over the left heart border . Lung volumes are somewhat low , somewhat limiting evaluation . There is hilar congestion , unchanged from prior exam . The lungs are otherwise clear . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Right IJ central line terminates in the lower SVC . No acute cardiopulmonary process . No significant change from prior .