PURPOSE: The efficacy of local excision in the treatment of some early-stage distal rectal cancers is still being debated, because few high-quality, long-term prospective data on outcomes are available. METHODS: Fifty-nine patients with T1 lesions were treated with local excision alone, whereas 51 patients with T2 lesions received external beam irradiation (5,400 cGY) and 5-fluorouracil (500 mg/m(2) intravenously Days 1-3, Days 29-31) after local excision. Kaplan-Meier curves were used to estimate the primary outcomes. The log-rank test and Cox's proportional hazards model were used to compare subgroups relative to these outcomes. RESULTS: With a median follow-up of 7.1 (range, 2.1-11.4) years, ten-year rates of overall survival were 84 percent for patients with T1 and 66 percent for T2 rectal cancer. Disease-free survival was 75 percent for T1 and 64 percent for T2 disease. Local recurrence rates for patients with T1 and T2 lesions were 8 and 18 percent, respectively, and rates of distant metastases were 5 percent for T1 and 12 percent for T2 lesions. T stage was a statistically significant predictor of overall survival (P = 0.04) and approached statistical significance as a predictor of disease-free survival (P = 0.07). CONCLUSIONS: Local excision alone for T1 rectal adenocarcinomas is associated with low recurrence and good survival rates that remain durable with long-term follow-up. T2 lesions treated via local excision and adjuvant therapy are associated with higher recurrence rates.
PURPOSE: The efficacy of local excision in the treatment of some early-stage distal rectal cancers is still being debated, because few high-quality, long-term prospective data on outcomes are available. METHODS: Fifty-nine patients with T1 lesions were treated with local excision alone, whereas 51 patients with T2 lesions received external beam irradiation (5,400 cGY) and 5-fluorouracil (500 mg/m(2) intravenously Days 1-3, Days 29-31) after local excision. Kaplan-Meier curves were used to estimate the primary outcomes. The log-rank test and Cox's proportional hazards model were used to compare subgroups relative to these outcomes. RESULTS: With a median follow-up of 7.1 (range, 2.1-11.4) years, ten-year rates of overall survival were 84 percent for patients with T1 and 66 percent for T2 rectal cancer. Disease-free survival was 75 percent for T1 and 64 percent for T2 disease. Local recurrence rates for patients with T1 and T2 lesions were 8 and 18 percent, respectively, and rates of distant metastases were 5 percent for T1 and 12 percent for T2 lesions. T stage was a statistically significant predictor of overall survival (P = 0.04) and approached statistical significance as a predictor of disease-free survival (P = 0.07). CONCLUSIONS: Local excision alone for T1 rectal adenocarcinomas is associated with low recurrence and good survival rates that remain durable with long-term follow-up. T2 lesions treated via local excision and adjuvant therapy are associated with higher recurrence rates.
Authors: Jose M Ramirez; Vicente Aguilella; Javier Valencia; Javier Ortego; Jose A Gracia; Pilar Escudero; Ricardo Esco; Mariano Martinez Journal: Int J Colorectal Dis Date: 2011-01-27 Impact factor: 2.571
Authors: Julio Garcia-Aguilar; Qian Shi; Charles R Thomas; Emily Chan; Peter Cataldo; Jorge Marcet; David Medich; Alessio Pigazzi; Samuel Oommen; Mitchell C Posner Journal: Ann Surg Oncol Date: 2011-07-14 Impact factor: 5.344
Authors: Sagar A Patel; Yu-Hui Chen; Jason L Hornick; Paul Catalano; Jonathan A Nowak; Lawrence R Zukerberg; Ronald Bleday; Paul C Shellito; Theodore S Hong; Harvey J Mamon Journal: Dis Colon Rectum Date: 2014-04 Impact factor: 4.585