Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are unchanged in appearance . The hila are unchanged in appearance appear There is a new right lower lobe opacity which , given the patient 's productive ___ , ___ represent pneumonia . Additionally , this is also seen on lateral view overlying the posterior lower lobes , and it is not seen on prior lateral radiograph . There is evidence of interlobular septal thickening consistent with known sarcoidosis . There are no focal lung consolidations . There is slight interval decrease in the prominence of the right perihilar region in comparison to prior radiograph . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or effusion .
    OUTPUT:
    
1 . Probable new right lower lobe pneumonia , less likely atelectasis . 2 . Minimal interval decrease in right hilar lymphadenopathy .