Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been some interval partial re-expansion of the left upper lung but there continues to be dense retrocardiac and lower lobe opacity compatible with volume loss / infiltrate / effusion . There is infiltrate and volume loss in the right lower lobe as well . There is hazy bilateral vasculature with pulmonary vascular redistribution And engorgement of the central vasculature .
    OUTPUT:
    
Pulmonary edema . An underlying infectious infiltrate can not be excluded