Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As on prior , there is increased opacification of the left hemithorax associated with volume loss in a configuration compatible left upper lobe collapse . Known pleural - based metastatic lesions in the left lower lobe are partially visualized . The right lung remains clear . No acute osseous abnormalities identified .
    OUTPUT:
    
Persistent findings of left upper lobe collapse and left - sided pulmonary nodules which are better seen on prior exam . No definite superimposed acute cardiopulmonary process .