Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and coronary artery bypass surgery . Cardiomediastinal contours are within normal limits allowing for marked patient rotation on the current study . A 1 - cm diameter opacity in the periphery of the right mid lung region may potentially represent a known sclerotic focus in the inferior right scapula shown on prior CT of ___ and previously projecting off of the lung on the prior chest x-ray of ___ , which was more optimally positioned . Lungs are otherwise clear , and there are no definite pleural effusions , although posterior costophrenic angles have been excluded from the radiograph , limiting assessment for small dependent effusions in this region .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . 1 - cm nodular opacity in right mid hemithorax , likely representing a known sclerotic focus in the inferior right scapula . Repeat chest radiograph with improved positioning may be helpful to confirm scapular location and to fully exclude a lung nodule in this region .