Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , accentuating the pulmonary vasculature and cardiac contour . Heterogeneous opacity in the right middle lobe could represent atelectasis or focus of developing infection . Blunting of the costophrenic angles bilaterally likely indicate small pleural effusions .
    OUTPUT:
    
1 . Heterogeneous right middle lobe opacity could represent atelectasis or developing infection . 2 . Small bilateral pleural effusions .