Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . There is no focal consolidation , effusion , or pneumothorax . The right costophrenic angle is blunted by some combination of atelectasis and effusion . Cardiac and mediastinal contours are normal . Biventricular pacing leads project over the expected locations . The stomach is dilated with air .
    OUTPUT:
    
Right basilar atelectasis and / or small effusion .