Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are slightly low , with persistent slight elevation of the right hemidiaphragm , unchanged compared to prior studies . There is no pleural effusion , pulmonary edema , pneumothorax , or focal opacification worrisome for pneumonia . A left chest wall Port - A - Cath and tracheal stent device are unchanged in position . Vascular clips projecting over the right chest and cervical spinal fusion hardware is also unchanged in position . Multiple right - sided rib deformities are again seen .
    OUTPUT:
    
Low lung volumes . Otherwise , no acute cardiopulmonary process .