Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there is a new very subtle asymmetric ___ in the right mid lung , seen only on frontal view . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Subtle right mid lung ___ , ___ represent pneumonia . If confirmation of pneumonia is desired , ___ obtain oblique views for further evaluation .