Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate cardiomegaly has been stable compared to exams dated back to at least ___ . Sternotomy wires are again seen , and appear intact . Platelike atelectasis at the left lung base , with elevated left hemidiaphragm is noted . There is mild pulmonary edema . There may be small bilateral pleural effusions . There is no evidence of a pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Mild pulmonary edema , with left basilar atelectasis . Probable small bilateral pleural effusions .