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Local excision after preoperative chemoradiation results in an equivalent outcome to total mesorectal excision in selected patients with T3 rectal cancer

Local excision after preoperative chemoradiation results in an equivalent outcome to total mesorectal excision in selected patients with T3 rectal cancer

Annals of Surgical Oncology 17(2): 441-447

We previously reported 26 patients who underwent preoperative chemoradiotherapy (CXRT) for T3 rectal cancer and were subsequently offered full-thickness local excision (LE) as an alternative to total mesorectal excision (TME). At nearly 4 years' follow-up, no difference in outcome was observed. This study compares outcomes in a larger cohort of patients and reevaluates the original 26 patients after longer follow-up. Retrospective review was performed of patients who underwent preoperative CXRT (radiation doses of 45, 50.4, or 52.5 Gy with concurrent 5-fluorouracil-based chemotherapy) followed by surgery for T3 rectal cancer. Forty-seven patients underwent LE (Kraske [n = 6] or transanal excision [n = 41]). 473 patients underwent TME (abdominoperineal resection [n = 141] or low anterior resection [n = 332]). Local recurrence, disease-free survival (DFS), disease-specific survival, and overall survival (OS) rates were compared. Median follow-up was 63 months for the LE group and 59 months for the TME group. Twenty-three LE patients (49%) had a complete response to CXRT, 17 (36%) had microscopic residual disease, and 7 (15%) had gross residual disease, compared with 108 (23%), 89 (19%), and 276 (58%) TME patients, respectively. There was no significant difference between the 10-year actuarial local recurrence rate for the LE group versus the TME group (10.6% and 7.6%, respectively; P = .52), and no significant difference in DFS, disease-specific survival, or OS rates between groups. In selected patients who demonstrate an excellent response to preoperative CXRT for T3 rectal cancer, full-thickness LE offers comparable local control, DFS, and OS to that achieved with proctectomy and TME.

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Accession: 054151351

Download citation: RISBibTeXText

PMID: 19847569

DOI: 10.1245/s10434-009-0735-7

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