Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again noted is massive widening of the mediastinum this is unchanged . The heart size is difficult to evaluate however likely in the upper limits of normal . The pulmonary vasculature is normal allowing for low lung volumes . There is a small left pleural effusion . A Swan - Ganz catheter is noted with its tip in the right pulmonary artery .
    OUTPUT:
    
Widening of the mediastinum is concerning for mediastinal hematoma . It is stable from a prior are film from earlier today .