Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . The lungs are well expanded . There is no focal consolidation , left pleural effusion or pneumothorax . Increased opacity at the lung bases bilaterally are likely atelectasis or scarring and there is a small right pleural effusion . Heart size is within normal limits . The aorta is tortuous with aortic knob calcifications . Degenerative change is seen in the left shoulder girdle .
    OUTPUT:
    
No pneumonia or edema . Small right pleural effusion .