Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are well expanded . The double contour of the right hemidiaphragm is unchanged , and is attributable to prominent posterior lateral abdominal fat , as demonstrated on prior CT . The lungs are clear . A large thymic shadow is unchanged . There is no focal consolidation , effusion , or pneumothorax . Cardiac and mediastinal contours are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .