Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . Ill - defined linear opacities at both lung bases are longstanding and stable since ___ . No new focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Cardiac and mediastinal silhouettes are stable . Evidence of DISH is seen along the spine .
    OUTPUT:
    
No significant interval change .