Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Aortic knob calcification is seen . Old - appearing rib deformities are seen along the lateral left mid ribs approximately at the level of the left eighth and ninth ribs .
    OUTPUT:
    
No acute cardiopulmonary process .