Residual wounds repeatedly ulcerated at the laterstage of severe burn were very difficult to heal, evenskin grafting and various antibacterial drugs had beenapplied.

• 严重烧伤晚期，残余创面反复溃玻、久治不愈，进而形成溃疡创面，采用多种抗菌药物及植皮手术难以治愈。