Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are visualized bilaterally . Left chest tube in place that remains unchanged position . In comparison to prior same - day study there is a decrease an left medial pneumothorax and new increased atelectatic changes at the right lung base . Small left pleural effusion remains unchanged . Re - demonstration of multiple left rib fractures with associated extrapleural blood remains unchanged .
    OUTPUT:
    
Small residual left pleural effusion that remains unchanged with decreased left medial pneumothorax . Increased atelectatic changes at the right lung base when compared to prior study . Multiple left rib fractures with extrapleural blood which remains unchanged .