Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate little overall change in the diffuse interstitial opacities compared to ___ . There is persistent bilateral hilar lymphadenopathy . There is no focal consolidation , pleural effusion , or pneumothorax . The heart size is within normal limits .
    OUTPUT:
    
Little change in overall distribution and severity of diffuse interstitial opacities , consistent with patient 's known diagnosis of sarcoidosis .