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Purpose To determine which indicators, anatomical nodal metastasis (Japan Pancreas Society, JPS), number of positive lymph nodes (PLN), or lymph node ratio (LNR), is the best means of assessing lymph node involvement in pancreatic cancer. Methods This retrospective study analyzed 275 patients with pancreatic cancer treated at a single institution. Survival curves according to the JPS, PLN, or LNR...
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