Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild vascular congestion . Focal opacity obscures the right heart border compatible with right middle lobe opacity . The heart is mildly enlarged . Mediastinal contours are stable . The aorta remains tortuous . There is no pleural effusion or pneumothorax . A right humeral replacement hardware and exaggerated thoracic lordosis are unchanged .
    OUTPUT:
    
Right middle lobe atelectasis vs penumonia .