Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The mediastinal and hilar contours are stable with calcification of the aortic knob . There is no right pleural effusion . Again demonstrated is a stable left loculated pleural effusion . The heart size can not be assessed due to the presence of this effusion . There has been interval placement of a left chest tube with tip terminating at the left lung base . There is no pneumothorax . There is no focal consolidation concerning for pneumonia .
    OUTPUT:
    
Stable left loculated pleural effusion with interval placement of a left chest tube .