plexus rectalis superior

例句：

1. 1.The patient's condition was complicated by the presence of a plexus rectalis superior.
   患者的病情复杂，因为存在直肠上血管丛。
2. 2. The surgeon performed a laparoscopic procedure to remove the plexus rectalis superior.
   外科医生进行了腹腔镜手术，以移除直肠上血管丛。
3. 3. The patient's recovery was slowed by the presence of a plexus rectalis superior.
   患者的康复进程因存在直肠上血管丛而受阻。