Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior examination , there has been no significant interval change other than decreased lung volumes . Diffuse , irregular , noncavitating , bilateral lung nodules are again seen . There is no pneumothorax , pleural effusion , or frank pulmonary edema . The heart size is normal . Mediastinal contours are normal .
    OUTPUT:
    
Diffuse , bilateral pulmonary nodules , which in a patient with known squamous cell carcinoma , may represent metaastatic disease .