Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with no evidence of consolidation , effusion , or pneumothorax . Bilateral densities projecting over the breasts are likely nipple shadows . There is however a calcific density projecting over the left hilum which is of nonspecific etiology . The cardiomediastinal silhouette is otherwise normal . The aorta appears tortuous . Degenerative changes are visualized throughout the thoracic spine .
    OUTPUT:
    
No evidence of acute cardiopulmonary process . There is however a calcific density projecting over the left hilum which is of non-specific etiology . Further evaluation is recommended with shallow oblique radiographs . Alternatively , submission of prior radiographs for long - term assessment may be performed .