直肠系膜全切除在直肠根治术中的地位

Role of total mesorectal excision in curative resection of rectal cancer

Objective To evaluate the effect of total mesorectal excision (TME) on local recurrence rate and 5-year survival rate following radical resection for rectal cancer. Methods From Jan. 1991 to Dec. 1998, 746 cases of rectal cancer treated with radical resection were divided randomly into group B (341 cases) undergoing traditional procedures and group A (405 cases) undergoing TME. There was no significant difference in tumor location, morphological appearance, histological patterns, grade of differentiation and staging clssification between two groups. SSR was carried out in 65.25% cases of group A and 54.25% cases in group B (P<0.05). Results Operative death occurred in 9 cases with an operative mortality rate being 0.97%, 5 cases in group A and 4 cases in group B. Anastomotic leakage occurred in 19 cases with an occurrence rate being 4.21%, 8 in group A (3.95%) and 11 cases in group B (5.95%). The follow-up rate in this series was 91% with the follow-up duration from 2 to 9 years, mean 48.3 months. Local recurrence occurred in 47 cases with an overall recurrence rate being 6.30%, 16 cases in group A (3.95%) and 31 in group B (9.09%),P<0.01. The overall 5-year survival rate was 72.46%±3.84% (life table method), 78.58%±3.28% in group A and 67.86%±3.02% in group B, respectively,P<0.05. Conclusion Radical resection with TME can effectively reduce the local recurrence tate and significantly improve 5-year survival rate as compared with traditional procedures.