Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest . The lungs are clear . The cardiac and mediastinal contours are normal . No nodules or masses are seen . Again seen is the deformity of the third and fourth right ribs , unchanged . No pleural abnormality is seen .
    OUTPUT:
    
No evidence of intrathoracic malignancy .