Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac contours are difficult to assess because of moderate elevation of the left hemidiaphragm , but the heart is probably enlarged , at least to a mild degree . Pleural effusions and left basilar opacities in the lungs are also difficult to exclude because of hemidiaphragmatic elevation . However , new reticulation in the right mid lobe suggests mild fluid overload .
    OUTPUT:
    
Findings suggesting mild vascular congestion , otherwise unchanged .