Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . A dialysis catheter , entering via the inferior vena cava , terminates in the mid upper right atrium . The cardiac , mediastinal and hilar contours appear unchanged . The minor fissure is somewhat more thickened , and increased interstitial abnormality and prominence of pulmonary vascularity suggests mild fluid overload . There is no pneumothorax . No focal opacity indicates pneumonia . A small pleural effusion is suspected on the right side .
    OUTPUT:
    
Findings suggesting mild fluid overload .