Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . A nodular structure projecting over the left upper lung may represent a calcified granuloma versus bony abnormality . Otherwise lungs are clear . No focal consolidation , large effusion or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process . Probable calcified granuloma versus bone islands projecting over the left upper lung .