Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . The thoracic aorta remains mildly prominent but similar in contour compared to the prior study . There is no pulmonary vascular congestion or frank pulmonary edema . Again noted in the right hemithorax is a centrally located spiculated mass in the right infrahilar region , which appears slightly decreased in overall size from the most recent prior chest radiograph , measuring approximately 2 .1 cm ( previously 3 .5 cm ) . There is no focal consolidation concerning for pneumonia . Left lower lobe atelectasis has improved from the prior study . No significant pleural effusion or pneumothorax is detected . The trachea is midline . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Slightly decreased size of right infrahilar mass from the most recent prior study of ___ . No new focal consolidation concerning for pneumonia .