Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large left - sided pleural effusion appears overall unchanged with persistent compression and collapse of most of the left lung . The left bronchus appears obstructed , better evaluated on the CT from ___ . The chest tube appears to be in unchanged position compared to the prior exam . The right lung is essentially clear . The left heart and mediastinal borders are obscured by the effusion . There is a small right - sided pleural effusion . There is no pneumothorax .
    OUTPUT:
    
No significant change in the large left - sided pleural effusion compared to the prior exam . The left sided chest tube appears to be in unchanged position .