Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study there is increase in the bilateral lower lobe alveolar infiltrates . The heart size continues to be moderately enlarged . The NG tube tip is in the stomach . The PICC line tip is at the cavoatrial junction . There is mild pulmonary vascular recent redistribution .
    OUTPUT:
    
Worsened bilateral lower lobe infiltrates . It is unclear if this is due to pulmonary edema or infectious etiology .