Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrate a right middle lobe opacity which silhouettes the right heart border . There is mild downward displacement of the minor fissure suggestive of atelectasis . There is no pleural effusion or pneumothorax . The remaining lungs are clear . Cardiomediastinal and hilar contours are within normal limits . There has been removal of the left - sided central venous line since the previous study .
    OUTPUT:
    
Right middle lobe consolidation with subtle loss of volume most compatible with right middle lobe partial collapse .