Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Multiple pulmonary nodules are consistent with known metastatic disease better evaluated on the prior CT chest of ___ . There is no focal consolidation , pleural effusion or pneumothorax . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
No findings to explain the patient shortness of breath . Known pulmonary metastases .