Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . Again seen are mediastinal vascular clips and intact median sternotomy wires . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . The heart size is normal . Mediastinal contours are within normal limits . There are degenerative changes of the right acromioclavicular joint .
    OUTPUT:
    
No radiographic evidence of acute cardiopulmonary process . No mediastinal mass is detected .