Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . Projecting over the right upper lung is a small nodular focus measuring approximately 6 mm in diameter and relatively hypodense , but potentially calcified . However , a soft tissue lung nodule could be considered . The osseous structures are unremarkable .
    OUTPUT:
    
No evidence of injury . Potential lung nodule projecting over the right upper lung ; preliminary reading entered while the patient was still in the ER . When clinically appropriate , evaluation with chest CT and short - term followup is recommended .