Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were obtained . The exam is limited by significant soft tissue attenuation and AP lordotic positioning . Despite these limitations , the lungs are well expanded and clear . There is no focal consolidation , effusion , pneumothorax . Mild cardiomegaly and aortic tortuosity are unchanged since ___ . However , the upper mediastinum appears wider than on prior exams , possibly due to AP technique .
    OUTPUT:
    
Apparent upper mediastinal widening is likely secondary to AP technique . A repeat PA radiograph should be obtained . Recommendation discussed with Dr ___ at 9 : 10 on ___ .