Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size , mediastinal , and hilar contours are normal . A hyperdensity overlying the anterior right first rib and posterior fourth rib is new since the radiograph from ___ . While this may just be costochondral calcification , underlying nodule is not excluded . The lungs are otherwise clear without pleural effusion , focal consolidation , or pneumothorax .
    OUTPUT:
    
New hyperdensity overlying the anterior right first rib and posterior fourth rib is new since ___ . While this may just be costochondral calcification , underlying nodule is a possibility . Nonemergent CT chest is recommended for further evaluation .