Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is a subcentimeter nodular opacity projecting over the anterior right first rib . The lungs are otherwise essentially clear . Cardiomediastinal silhouette is within normal limits . Old healed left lateral eighth rib fracture is identified . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process . Nodular opacity projecting over the anterior right first rib , potentially within the bone ; however , may represent an underlying nodule . Apical lordotic view suggested .