Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . The lungs are clear . There is no pneumothorax , contusion , or pleural effusion . There are subtle deformities in the posterior left fifth and sixth ribs , suggestive of healed fractures , unchanged since ___ . There is a subcentimeter radiodensity projecting over the lower thoracic spine , unchanged since prior exams , upon correlation with CT dated ___ , consistent with a calcified granuloma in the right base .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Healed upper posterior left rib fractures . Calcified granuloma in right lung base .