Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest . Linear bibasilar opacities are most suggestive of atelectasis . There may be trace bilateral effusions . The lungs are otherwise clear . The cardiomediastinal silhouette is stable , noting prosthetic aortic valve and median sternotomy wires . Left chest wall dual - lead pacing device is again identified . Anterior right sixth and seventh rib deformities suggest prior fracture and were present on prior . There is no visualized acute fracture based on these non-dedicated films .
    OUTPUT:
    
No definite acute cardiopulmonary process . If desired , dedicated rib series can be performed for more detailed evaluation of the ribs .