Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: CABG changes are noted , with median sternotomy wires and mediastinal clips . Mild - to - moderate cardiomegaly is unchanged . There is no pulmonary edema , pleural effusion , or pneumothorax . Lungs are well expanded and clear . Mild degenerative changes in the thoracic spine and right glenohumeral joint .
    OUTPUT:
    
Mild cardiomegaly . No acute process .