Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Comparison is made with the next preceding PA and lateral chest examination of ___ . On today 's examination , the patient is moderately rotated towards the right which results in a somewhat different projection of the previously identified sternotomy wires and the cardiovascular and mediastinal silhouettes . Grossly , the findings are unchanged . The pulmonary vasculature is not congested . No signs of new acute parenchymal infiltrates are present , and the lateral pleural sinuses remain free from any fluid accumulation .
    OUTPUT:
    
No gross interval change is identified on this portable single view examination in comparison with the previous PA and lateral chest examination of ___ . Thus , there is evidence of previous bypass surgery with borderline heart size but no evidence of acute infiltrates or congestion . As before general findings consistent with COPD .