Efficacy of transanal local excision in the treatment of low rectal cancer

Abstract

Objective To evaluate the therapeutic effect of transanal local excision in the treatment of low rectal cancer.Methods The data of 49 cases of low rectal cancer patients treated by transanal local excision (group A,37 cases of T1 patients and 12 cases of T2 patients) were reviewed retrospectively,and compared with the group of 45 cases treated by radical resection( group B,11 cases of T1 patients and 34 cases of T2 patients).The 5-year survival rates,recurrence rates and postoperative complications between the two groups were compared.Results The incidence of postoperative complications in group A was significantly lower than that in group B(4.1％ vs 15.6％,x2 =4.69,P ＜0.05 ).The 5-year survival rate of group A was 97.9％ and the 5-year survival rate of group B was 95.6％.There was no significantly statistical difference on the 5-year survival rate between the two groups( x2 =0.439,P ＞ 0.05 ).But for the T2 patients,the recurrence rates in group A was 33.3％,which was significantly higher than the T2 patients in group B(5.9％ ) ( x2 =5.89,P ＜0.05 ).All patients with low histopathological grade tumor in group A showed postoperative recurrence and metastasis.Conclusion Transanal local excision with a rigid criteria can get good curative effect in the T1 patients,but not suitable for the T2 patients or patients with low histopathological grade tumor. Key words: Rectal cancer; Surgery; Complications; Survival rates