To evaluate the efficacy of NOSESⅠ surgery for low rectal cancer with mesangial hypertrophy.

Sixty patients with mesangial hyperplasia and low rectal cancer who underwent NOSESⅠ surgery from January 2021 to June 2023 were selected as study subjects and randomly divided into control group and improved group according to hospital bed number, with 30 patients in each group. The control group underwent conventional laparoscopic NOSESⅠ type A surgery, and the improvement group underwent improved laparoscopic NOSESⅠ type surgery. SPSS 22.0 software was used to analyze the data. Measurement data such as perioperative indexes and anal function indexes were expressed as (), and independent sample t test was used. Statistical data such as complication rate were expressed by [cases (%)] using χ² test. P<0.05 was considered statistically significant.

Compared with the control group, the operation duration and hospitalization cost in the improved group were significantly reduced (P<0.05), and the success rate of pulling out was significantly increased (P<0.05), while there were no statistically significant differences in other operation-related indicators and the total incidence of complications between the two groups (P>0.05). There was no interaction between time and method on the severity of fecal incontinence score (Wexner score), St. Marks fecal incontinence score (Vaizey score) and LARS score (LARS score) (P>0.05). The main effect of time on Wexner, Vaizey and LARS scores was significant (P<0.05). Methods The main effect on Wexner, Vaizey and LARS scores was not significant (P>0.05).

The improvement of NOSESⅠ surgery is safe and feasible in the treatment of low rectal cancer with mesangial hyperplasia, and has the advantages of short operation time, low treatment cost and high success rate of NOSESⅠ surgery, so it deserves clinical attention and promotion.