Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is significant cardiomegaly and obscuration of the left costophrenic angle which may represent a small pleural effusion and adjacent atelectasis . The lungs are otherwise clear . No pneumothorax . Osseous structures are intact .
    OUTPUT:
    
Significant cardiomegaly and left lung base consolidation , possibly atelectasis .