Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is right upper lobe collapse and consolidation . Has been interval improvement in left base consolidation . No pleural effusion is seen . There is no pneumothorax . Left paratracheal opacity corresponds to enlarged , sub sternal left lobe of the thyroid . Evidence of hiatal hernia is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Persistent right upper lobe collapse and consolidation .