Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were reviewed . The cardiomediastinal and hilar contours are unchanged . Elevation of the right hemidiaphragm is again noted with post-surgical changes in the right chest from prior right upper lobectomy . Low lung volumes are again appreciated . Slight increase in interstitial markings may indicate an element of pulmonary vascular congestion . Right shoulder replacement is noted .
    OUTPUT:
    
Low lung volumes with increased interstitial markings which may indicate mild pulmonary vascular congestion .