Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an ill - defined opacity in the right mid lung field , correlating to the right lower lobe of the lateral view . This is compatible with a right lower lobe pneumonia . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Right lower lobe pneumonia .