Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no pneumothorax . Cardiomegaly is stable . Main pulmonary artery is enlarged . New fiducial seed projects in the right hilum . Ill - defined opacities in the left mid to lung are more conspicuous than before , differential diagnosis could represent infection or less likely atelectasis . Right lower lobe atelectasis has increased . Retrocardiac opacities are likely atelectasis .
    OUTPUT:
    
No pneumothorax . Increasing opacities in the left mid lung differential diagnosis include infection , aspiration . Less likely atelectasis