Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Elevation of the right hemidiaphragm is demonstrated . 2 .4 cm rounded opacity projecting over the lateral aspect of the right lung base may reflect a nipple shadow . Atelectasis in the right lung base is present . The left lung is clear . No focal consolidation , pleural effusion or pneumothorax is clearly identified . No displaced fractures are present .
    OUTPUT:
    
1 . 2 .4 cm rounded opacity projecting over the lateral aspect of the right lung base may reflect a nipple shadow . Repeat radiographs with nipple markers are recommended for further assessment . 2 . Elevation of the right hemidiaphragm of unknown acuity with right basilar atelectasis .