preferred_name: total axillary lymphadenectomy superior border of dissection was axillary vein
preferred_name_lc: total axillary lymphadenectomy superior border of dissection was axillary vein
label: total axillary lymphadenectomy superior border of dissection was axillary vein
label_lc: total axillary lymphadenectomy superior border of dissection was axillary vein