Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged , with calcifications at the aortic arch again redemonstrated . Pulmonary vascularity is not engorged . There are minimal streaky opacities at the lung bases compatible with atelectasis . A small left pleural effusion is similar in size compared to the prior study . No right - sided pleural effusion is present , and there is no pneumothorax . There are mild degenerative changes in the thoracic spine with loss of height of an upper lumbar vertebral body , which appears unchanged compared to the CT L - spine from ___ .
    OUTPUT:
    
Minimal bibasilar atelectasis and small left pleural effusion . No pulmonary edema .