Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , the right middle lobe opacity is increased in density and the right hilum appears more prominent . Unchanged mild cardiomegaly . No pneumothorax . Mediastinal borders are normal . Median sternotomy wires are in place .
    OUTPUT:
    
Since ___ , worsening right middle lobe pneumonia and right hilar enlargement . Chest CT is recommended for concern of an obstructive process .