Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged and there is pulmonary vascular redistribution . There is hazy right alveolar infiltrate that is increased compared to prior . There is a small right effusion . The vasculature on the right is ill - defined . The Swan - Ganz catheter , ET tube , NG tube are unchanged . Left - sided chest tube is again seen .
    OUTPUT:
    
Increased right - sided alveolar infiltrate could be due to fluid overload or underlying infection .