Damage the position and regard drop ping department of duodenum as it more,accounts for71%(5/7),horozontal department and ball dep artment account for 14%each(1/7),28%of complication incidence afte r opera-tion(2/7),14%of rate that die of illniss(1/7).

• 损伤部位以十二指肠降部为多占71%25(5/7),水平部和球部各占14%25(1/7)。 术后并发症发生率28%25(2/7)、病死率14%25(1/7)。