Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Heart size is normal . Mediastinal and hilar contours are normal . The previously identified right infrahilar opacification is probably due to a pericardial fat pad , pericardial cyst or lipoma . There is no focal consolidation . Minimal , if any , pleural effusion . Bibasilar linear atelectasis and small pleural effusions . No pneumothorax . There are serpiginous radiodense structures in the left axilla and right upper chest , which could represent soft tissue calcifications or external structures .
    OUTPUT:
    
Previously visualized right infrahilar opacification likely represents a pericardial fat pad or potentially a pericardial cyst or lipoma .