Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Surgical clips from prior thyroid surgery are again seen overlying the upper trachea . Allowing for differences in technique , the cardiomediastinal silhouettes are stable , demonstrating a tortuous thoracic aorta . In comparison to prior radiograph , there is a poor inspiratory effort and low lung volumes . Mild central and diffuse interstitial prominence potentially represents bronchovascular crowding in the setting of low lung volumes . There is no focal lung consolidation . There is a trace right pleural effusion . There is no left pleural effusion . There is no pneumothorax . There is mild levoscoliosis of the thoracic spine .
    OUTPUT:
    
Mild central and diffuse interstitial prominence , potentially due to bronchovascular crowding in the setting of low lungs volumes . Trace right pleural effusion . No focal consolidation .