rectal columns

例句：

1. 1.The doctor advised him to undergo a colonoscopy to detect any rectal columns that may be causing issues.
   医生建议他接受结肠镜检查，以检测可能引起问题的直肠柱状结构。
2. 2.During the surgery, the surgeon carefully removed the rectal columns that were causing pain.
   在手术过程中，外科医生小心地移除了导致疼痛的直肠柱状结构。
3. 3.The patient was diagnosed with rectal columns cancer and underwent treatment to remove the tumors.
   患者被诊断出患有直肠柱状癌，并接受了治疗以切除肿瘤。