Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest . The lungs are well expanded . There is a small rounded opacity overlying the mid right lung laterally which was not apparent on prior imaging , and which may represent a small pneumonia in the right clinical setting . The lungs are otherwise clear . There is no pleural effusion or pneumothorax . Prominent hilar lymphadenopathy is again seen , suggestive of sarcoidosis and unchanged from prior exam . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Small rounded opacity overlying the mid right lung laterally which was not apparent on prior imaging , and which may represent a small pneumonia in the right clinical setting . If opacity does not clear with antibiotics , CT is recommended to further evaluate .