Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are slightly low lung volumes . Given this , no focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Cardiac , mediastinal , and hilar contours are stable . There may be very minimal central pulmonary vascular engorgement without overt pulmonary edema , unchanged .
    OUTPUT:
    
No significant change since the prior study .