Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is slightly rotated , with appearance of the trachea deviated to the right . There is persistent evidence of bilateral pulmonary fibrosis , left worse than right . Increased soft tissue seen at the mediastinum on the left is as seen on prior CT scan and compatible with previoulsy identified mass . While there are no gross changes from the study seven days before , subtle interval changes are difficult to assess given the extensive background fibrosis . There is no pneumothorax . The cardiomediastinal silhouette is unchanged with a calcified aortic arch .
    OUTPUT:
    
1 . Persistent baseline left worse than right pulmonary fibrosis and left sided mass . 2 . No significant interval changes from 7 days ago .