Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are intact median sternotomy wires and a left - sided chest wall pacemaker with leads terminating in the right atrium , right ventricle , and left chest wall . The heart is enlarged . There is no evidence of left lower lobe pneumonia , consolidation , or effusion . Osseous structures are unremarkable .
    OUTPUT:
    
1 . No evidence of left lower lobe pneumonia or pulmonary edema . 2 . Cardiomegaly is consistent with known history of ischemic cardiomyopathy and systolic CHF .