Prognostic value of positive lymph nodes in rectal cancer

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Abstract
Abdominal "curative" resections for rectal cancer in 109 patients with positive lymph nodes were prospectively studied. The best subdivision of patients for predicting outcome was into 1-3 and greater than 3 positive lymph node groups. Comparison with patients with greater than 3 positive lymph nodes demonstrated that patients with 1-3 positive nodes had less local (35.0 percent vs. 13.0 percent; P = 0.007) and less distant recurrence (45.0 percent vs. 26.0 percent; P = 0.04) and had much better crude five-year survival (58.2 percent vs. 17.0 percent; P less than 0.0001). For predicting postsurgical outcome in patients with positive lymph nodes, the results justify subdividing patients into the following two prognostic subgroups: 1) those with 1-3 involved lymph nodes and 2) those with metastatic tumor in four or more lymph nodes.

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