Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A stimulator device again projects over the left hemithorax . The heart is mildly enlarged . The aortic arch shows patchy calcification . There is a moderate interstitial abnormality most consistent with congestive heart failure . In addition there is a slightly bulging posterior basilar opacity better depicted on the lateral view likely localizing to the left lower lobe . This , for the most part , probably represents a pleural effusion but coinciding atelectasis or pneumonia is not excluded by this examination .
    OUTPUT:
    
1 . Findings consistent with moderate pulmonary edema . 2 . Posterior basilar opacity , probably in the left lower lobe , suggesting a pleural effusion with atelectasis ; however pneumonia not excluded . Short - term follow - up radiographs may be helpful , preferably with PA and lateral technique , if feasible .