张某，３２岁，系铜棒厂工人。某日工作时，由于高温铜水飞溅，致头面及躯干点片状烫伤，其中部分溅入口腔并咽下致胸骨后烧灼痛。经当地医院急行保守对症等治疗。后逐渐出现吞咽困难，遂于伤后２个月行食管扩张术。因疗效不佳，进食困难进行性加重，并于伤后９个月行结肠代食 Zhang, 32, a copper rod factory workers. During a certain work day, due to the high temperature copper water splashing, the scalp caused by scalding of the head and trunk points, some of which were splashed into the mouth and swallowed to cause sore chest pain after swallowing. The local hospital emergency line symptomatic treatment. Gradually dysphagia, then 2 months after injury esophageal dilatation. Due to poor efficacy, eating difficulty progressive increase, and 9 months after injury in the colon on behalf of the food