Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiograph 2 months prior there is no significant changes . Lung volumes remain low . There are no focal airspace opacities . The right hemidiaphragm remains chronically elevated , previously described as a large anterior eventration . The cardiac silhouette appears somewhat prominent although this is partially related to the low lung volumes . The mediastinal silhouette and hilar contours are unremarkable . The costophrenic sulci are sharp without evidence of effusion . There is no pneumothorax . The aorta is tortuous and calcified .
    OUTPUT:
    
No acute intrathoracic process and no significant change compared to 2 months prior .