Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since 1 day prior , medial right upper lung and perihilar opacity is essentially unchanged . 2 right - sided chest tubes remain in place . No pleural effusions . The left lung is clear . Heart size and mediastinal widening are unchanged . No pulmonary vascular congestion or pulmonary edema . A left - sided port / central venous catheter is unchanged and appropriately positioned .
    OUTPUT:
    
Unchanged media right upper lung and perihilar opacity may be caused by hematoma .