Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and well - aerated lungs without focal consolidation , pleural effusion , or pneumothorax . Linear lucency in the lower right neck at the upper edge of the image likely corresponds to air within the soft tissues , as seen on CT head from earlier the same day . There is no definite extension into the mediastinum .
    OUTPUT:
    
No definite pneumomediastinum . Linear lucency in the lower right neck at the upper edge of the image , corresponding to air seen within the soft tissues on CT from the same day .