Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Exam is limited secondary to extremely low lung volumes . Right hemidiaphragm is elevated as on prior . Postoperative changes of possible right upper lobectomy are again seen . Left lung is grossly clear . There is no effusion . The cardiomediastinal silhouette is unchanged . Bilateral shoulder arthroplasties are noted . No displaced fractures identified on this nondedicated exam .
    OUTPUT:
    
No definite acute cardiopulmonary process .