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Annals of Surgical Oncology, Vol 7, Issue 3 210-217, Copyright © 2000 by Society of Surgical Oncology

ARTICLES

Survival benefit of D2 lympadenectomy in patients with gastric adenocarcinoma

L. F. Onate-Ocana, V. Aiello-Crocifoglio, R. Mondragon-Sanchez and J. M. Ruiz-Molina
Gastroenterology Department, Instituto Nacional de Cancerologia, Mexico City, Mexico. lonate@prodigy.net.mx

BACKGROUND: A definite resolution to the controversy on the optimal extension of lymph node dissection (LND) in gastric cancer has not been achieved. Surgical morbidity and survival of D1 and D2 LND are compared by multivariate analysis. METHODS: A retrospective cohort study of 219 patients with gastric cancer and curative resection performed according to Japanese rules. D1 dissection was performed in 106 cases and D2 in 113. The logistic regression model was used to define risk factors for surgical morbidity and the Cox model to determine prognostic factors. RESULTS: Surgical morbidity occurs in 16.9% and 19.5% in D1 and D2 LND, respectively (P = .7). The morbidity determinants were operation blood loss, splenectomy, pancreaticosplenectomy, antrum location, low serum albumin, total gastrectomy, and metastatic nodal ratio (P < .0001), but not D2 LND. Five-year survival was 35.1% for D1 and 64% for D2 LND (P < .039). The prognostic factors were T stage, N stage, serum albumin level, total gastrectomy, D2 LND, and comorbidity (P < .0001). CONCLUSIONS: The increment of surgical morbidity and mortality rates attributed to D2 LND is largely caused by the effect of splenectomy and pancreaticosplenectomy. A significant survival benefit because of D2 LND was found. The results support the value of extended LND in the surgical treatment of gastric cancer.


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