Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube is appropriately positioned along the midline . Dense retrocardiac opacification is not significantly changed , consistent with partial left lower lobe collapse . A probable small left pleural effusion is not significantly changed . The right lung is clear . There is no right pleural effusion . No pneumothorax is seen . Aortic calcifications are noted . A right - sided rib deformity is unchanged . An old fracture of the proximal right humerus is redemonstrated .
    OUTPUT:
    
No significant change in partial left lower lobe collapse or probable small left pleural effusion .