Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: the right hemidiaphragm is mildly elevated . There is volume loss at both bases . Heart size is normal . The aorta is slightly calcified . There is mild pulmonary vascular redistribution . Old rib fractures are noted on the right . There is hazy increased opacity in the right lung which could be due to volume loss or infiltrate . Is increased opacity at the left CP angle could represent metastatic disease or small infiltrate or effusion . The known metastatic disease with multiple lung nodules are better visualized on the prior CT .
    OUTPUT:
    
? infiltrate vs . atelectasis right mid lung .