Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are subtle , spiculated densities with possible calcifications seen within the right lung base , findings which may represent scarring . There is no pneumothorax , pleural effusion , or overt pulmonary edema identified . The heart size is normal . Mediastinal contours are normal . A displaced right midclavicular fracture appears to be chronic and demonstrates nonunion .
    OUTPUT:
    
1 . Right lower lobe spiculated densities and possible calcifications . Findings may represent chronic scarring . In the absence of prior comparison examinations , non-urgent chest CT is recommend for further characterization . 2 . Chronic , displaced right midclavicular fracture appear