preferred_name: Lymph nodes present within the breast specimen (i.e. intramammary lymph nodes)
preferred_name_lc: lymph nodes present within the breast specimen (i.e. intramammary lymph nodes)
label: Lymph nodes present within the breast specimen (i.e. intramammary lymph nodes)
label_lc: lymph nodes present within the breast specimen (i.e. intramammary lymph nodes)