直肠癌根治手术中发生骶前大出血是难以处理的棘手问题 ,有时来势凶险 ,影响病人的生命安全 ,是直肠癌手术最严重的并发症之一 ,本文就其有关的几个方面予以叙述。一、骶前大出血的原因1.骶前静脉出血的主要原因是术者对盆腔筋膜的解剖不熟悉 ,分离直肠后壁时过分远离直肠或贴? Pre-bleeding hemorrhage in radical rectal cancer surgery is a difficult problem to deal with, and sometimes dangerous, affecting the life safety of patients is one of the most serious complications of rectal cancer surgery, this article will describe its related aspects. First, the cause of hemorrhage before hemorrhoids 1. The main reason for hemorrhoids before hemorrhoids is that the surgeon is not familiar with the anatomy of the pelvic fascia. Is it too far from the rectum or the posterior wall when separating the rectum?