Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent elevation of the right hemidiaphragm and low lung volumes are unchanged compared to the prior study earlier on the same day , limiting assessment for pulmonary edema or consolidation . There is probably no pleural effusion . Apices are obscured by the chin .
    OUTPUT:
    
Unchanged low lung volumes and elevated right hemidiaphragm . No frank evidence of acute cardiopulmonary process in this very limited study .