Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact . Lung apices are partially obscured by patient 's positioning . However , lungs are fully expanded and clear in this limited view . Pleural surfaces are normal . Heart size , mediastinal contour and hila are normal without lymphadenopathy . Aortic arch calcifications are noted as well as a left pigtail catheter with tip in the left upper quadrant .
    OUTPUT:
    
No radiographic evidence of acute cardiopulmonary process such as pneumonia .