Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . Mild tortuosity is present along the thoracic aorta . The lungs are well expanded . There is no pneumothorax or pulmonary vascular congestion . Minimal blunting of the left posterior costophrenic angle may be related to pleural thickening or trace fluid . Multilevel moderate thoracic spondylosis is present .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Mild blunting of left costophrenic angle could represent pleural thickening versus trace fluid .