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Title: Efforts to improve local control in rectal cancer compromise survival by the potential morbidity of optimal mesorectal excision.
Author: Laurent C, Nobili S, Rullier A, Vendrely V, Saric J, Rullier E.
Journal: J Am Coll Surg; 2006 Nov; 203(5):684-91. PubMed ID: 17084330.
Abstract:
BACKGROUND: The technique of total mesorectal excision (TME) increases the risk of anastomotic leakage. The impact of postoperative morbidity of TME on longterm survival has never been described. We retrospectively analyzed factors that might influence survival after TME for rectal cancer, including postoperative morbidity. STUDY DESIGN: From 1994 to 2001, 300 patients (192 men and 108 women; mean age, 64 years) had TME for rectal cancer. Preoperative radiotherapy was given in 202 patients. Age, gender, tumor height, size and circular invasion of the tumor, pathologic tumor and nodal status, distal and circumferential margins, number of lymph nodes analyzed, type of surgery, postoperative pelvic sepsis, preoperative radiotherapy, and adjuvant chemotherapy were examined; their association with overall and disease-free survival was evaluated by the log-rank test in univariate analysis and by multivariable Cox proportional hazards analysis. RESULTS: Postoperative morbidity was 38% (113 of 300 patients) and included 18% (54 of 300 patients) pelvic sepsis. The local recurrence rate was 6% (18 of 300 patients), and the distant metastasis rate was 24% (73 of 300 patients). Recurrence was three times more frequent distally than locally, including patients with pelvic sepsis The 5-year overall and disease-free survival rates were 72% and 60%, respectively. Independent predictors of overall survival were age older than 64 years (odds ration [OR]=2.19, 95% CI 1.32 to 4.17), pelvic sepsis (OR=2.06, 95% CI 1.10 to 3.87), circumferential surgical margin (OR=3.19, 95% CI 1.67 to 6.09), pathologic tumor (OR=2.69, 95% CI1.23 to 5.88), and nodal status (OR=3.18, 95% CI 1.79 to 5.64). Independent predictors of disease-free survival were pelvic sepsis (OR=2.17, 95% CI 1.31 to 3.58), circumferential surgical margin (OR=2.61, 95 CI 1.52 to 4.49), pathologic tumor (OR=1.82, 95% CI 1.04 to 3.20), and nodal status (OR=2.67, 95% CI 1.68 to 4.23). Patients with pelvic sepsis had a 5-year disease-free survival of 39% compared with 65% without pelvic sepsis (p<0.001). CONCLUSIONS: After TME for rectal cancer, pelvic sepsis is a common complication that is associated with increased risk of distant recurrence and decreased longterm survival. Efforts are necessary to decrease postoperative morbidity in surgical treatment of rectal cancer.

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