Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent mild cardiomegaly . The right hemidiaphragm is obscured , due to a right lower lobe opacity . This is likely due to a combination of atelectasis and pleural fluid . No other focal consolidation . No evidence of pneumothorax . The thoracic aorta is calcified and tortuous . Height loss of a lower thoracic vertebral body is unchanged .
    OUTPUT:
    
Obscuration of the right hemidiaphragm and right lower lobe opacity are likely a combination of atelectasis and pleural fluid . Superimposed infection is not excluded .