Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . There is pulmonary vascular redistribution with ill - defined vascularity . Lung volumes are low and there is an area in the retrocardiac perispinal region of increased opacity that could represent an area of volume loss or infiltrate that is increased compared to prior
    OUTPUT:
    
Fluid overload . An infectious infiltrate particularly in the left lower lobe can not be excluded