Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . The lungs are clear on the frontal view . There is increased opacity projecting over the lower lungs anteriorly and posteriorly on the lateral , which is likely due to extremely low lung volumes on this projection . Costophrenic angles are sharp . Cardiomediastinal silhouette is normal . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .