Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and a lateral chest radiographs demonstrate multiple sternotomy wires , mediastinal clips , and post CABG material . Right lung base scarring and irregularity of the right rib cage may be secondary to cardiac surgery and are unchanged . Moderate cardiomegaly is redemonstrated . There is no pulmonary edema , pleural effusion , pneumothorax , or focal opacity concerning for pneumonia .
    OUTPUT:
    
1 . No pulmonary edema , pleural effusion , or evidence of pneumonia . 2 . Unchanged moderate cardiomegaly and post cardiac surgery changes . These findings were communicated via telephone by Dr . ___ to Dr . ___ at ___ on ___ .