Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upper lobe predominant ill - defined lung opacities which demonstrated on prior CT and are compatible with changes sarcoidosis . There is no focal lung consolidation concerning for pneumonia . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is stable . Partially imaged anterior cervical spine spinal fusion hardware .
    OUTPUT:
    
Upper lobe predominant ill - defined lung opacities as demonstrated on prior chest CT , consistent with known sarcoidosis . No focal consolidation .