Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A 5 .6 x 3 .4 mm radiopaque density , likely metallic , overlies the mediastinum in the midline , posterior to the mainstem bronchus on the lateral view . The shape is compatible with a pen tip . This could lie within the mid esophagus or in the immediately surrounding soft tissues . Compared with ___ , this radiopacity is new Cardiomediastinal silhouette itself is within normal limits . No CHF , focal infiltrate , effusion , or pneumothorax is detected . The extreme right costophrenic angle is excluded from the AP view , but there is no evidence of effusion on the lateral view . Minimal degenerative changes noted in the thoracic spine , including possible minimal anterior wedging of a lower thoracic vertebral body , question T9 . The appearance is unchanged compared with ___ . At the anteroinferior edge of the lateral view , metallic densities are seen projecting over the upper abdomen .
    OUTPUT:
    
0 .6 mm metallic density in the mid mediastinum is compatible with a pen tip and could lie within the mid-esophagus or possibly in the immediately surrounding soft tissues . No pneumomediastinum identified . Minimal T - spine degenerative change , with possible minimal anterior wedging of a mid thoracic vertebral body that does not appear acute . Metallic densities noted projecting over the upper abdomen . Please see separate report of abdomen films obtained same day .