Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No acute pulmonary edema or pneumonia . Cardiac size is top - normal . No pleural effusions or pneumothorax . Mild hyperinflation . Prior right mastectomy and right axillary lymph node dissection .
    OUTPUT:
    
No acute cardiopulmonary process , within the limitations of chest radiograph .