Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an apparent 2 cm rounded opacity in the retrocardiac region on both the frontal and lateral views . The lungs are otherwise clear without consolidation , effusion , or edema . Cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications noted at the aortic arch . Lower thoracic vertebral body height loss is age indeterminate .
    OUTPUT:
    
Apparent rounded opacity in the retrocardiac region for which nonurgent chest CT is suggested . Otherwise , no acute cardiopulmonary process .