Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette is unremarkable . A right hilar opacity could be due to pneumonia , however it could also be due to bronchovascular crowding from elevation of the right hemidiaphragm . No pneumothorax or effusions .
    OUTPUT:
    
Right hilar opacity could be due to pneumonia , or in the correct clinical setting , simply bronchovascular crowding from elevation of the right hemidiaphragm .