Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an opacity at the right lung base that silhouettes the right heart border , suggestive of right middle lobe pneumonia . No pleural effusions or pneumothorax . No evidence of pulmonary edema . No acute osseous abnormalities are identified . There is no free air under the right hemidiaphragm .
    OUTPUT:
    
Right middle lobe opacity , suspicious for pneumonia .