《黄帝内经·灵枢·痈疽》
如果发于表皮的痈坚硬而没有破溃的，称为马刀挟瘿，应当急速采取相应措施进行治疗。
其痈坚而不溃者，为马刀挟瘿，急治之。
If a carbuncle appears on the epidermis and is hard without breaking, it is called horse sword rash. Appropriate measures should be taken to treat it quickly.