Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is not enlarged . The aortic knob is calcified . The mediastinum and hilar contours are unremarkable . There may be some gaseous distention of the upper thoracic esophagus .
    OUTPUT:
    
1 . No focal consolidation . 2 . Possible gaseous distention of the upper thoracic esophagus .