Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded , but clear of focal consolidation . There is blunting of the right posterior costophrenic angle which could potentially be due to atelectasis , although small effusion would also be possible . Biapical scarring is seen , right greater than left . The cardiac silhouette is mildly enlarged . No acute osseous abnormality .
    OUTPUT:
    
Mild cardiomegaly without definite acute cardiopulmonary process .