Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No definite focal consolidation is seen . Subtle opacity projecting over the anterior right fifth rib is felt to most likely represent costochondral calcification . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal to mildly enlarged . Mediastinal contours are grossly unremarkable . No overt pulmonary edema is seen . Degenerative changes are seen at the acromioclavicular joints and right glenohumeral joint .
    OUTPUT:
    
Top - normal to mildly enlarged cardiac silhouette . No focal consolidation or pulmonary edema .