Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . Compared to prior study , the degree of pulmonary edema is unchanged . There is however increased retrocardiac opacity , which likely reflects atelectasis + / - effusion , however in appropriate clinical setting developing pneumonia can not be excluded . There is interval increase pleural fluid on the right . Moderate cardiomegaly is stable .
    OUTPUT:
    
1 . Unchanged severity of pulmonary edema . 2 . Increased right lower lung opacity , can not exclude developing pneumonia in appropriate clinical setting .