Purpose-To retrospectively determine the incidence and patterns (in-field, marginal, or out-offield) of locoregional recurrence of gastric cancer in patients who received preoperative chemoradiotherapy and to determine the outcome in these patients. 1994 and 2004, 149 patients with gastric carcinoma were treated on institutional protocols with preoperative chemoradiation. Ultimately, 105 patients had an R0 resection. Sixty-five of these patients received preoperative chemotherapy followed by chemoradiotherapy and 40 patients received preoperative chemoradiotherapy. Most (96%) of these patients received 5-fluorouracil-based chemotherapy during radiation, and the median dose of Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
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Author Manuscript Author ManuscriptAuthor Manuscript Author Manuscript radiation administered was 45 Gy. We retrospectively identified and classified the patterns of locoregional recurrences.Results-The 3-year actuarial incidence of locoregional recurrence was 13%, with locoregional disease recurring as any part of the failure pattern in 14 patients. The majority (64%) of evaluable locoregional recurrences were in-field. Two of the four patients with marginal recurrence had inadequate coverage of regional nodal volumes on their oblique fields. The pathologic complete response rate was 23%. A pathologic complete response was the only statistically significant predictor of locoregional control.Conclusions-Patients with gastric cancer who received preoperative chemoradiotherapy had low rates of locoregional recurrence. This strategy merits prospective multi-institutional and randomized evaluation.