Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal increased density compared to the prior exam in the right middle lobe is consistent with pneumonia given the provided history . No pleural effusion , edema , or pneumothorax . The heart is normal in size . The mediastinum is not widened .
    OUTPUT:
    
Right middle lobe pneumonia . Recommend follow - up radiograph in 6 weeks after treatment to ensure resolution .