The superiority of ratio-based lymph node staging in gastric carcinoma
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Background: The need for a precise lymph node staging without stage migration is of paramount importance when comparing and evaluating international treatment results.
Methods: We reviewed 1019 patients who underwent R0 resection at Kansai Medical University between 1980 and 1997. The patients were classified according to the 1997 International Union Against Cancer (UICC)/American Joint Committee on Cancer (AJCC) pN classification or the N staging depending on the ratio between the number of excised and the number of involved lymph nodes (pN1, ≤25%; pN2, ≤50%; pN3, >50%).
Results: Among the 1997 UICC/AJCC pN subgroups, prognosis worsened with an increase in lymph node ratio. In contrast, the ratio-based classification showed more homogenous survival according to the number of involved lymph nodes. Multiple stepwise regression analysis showed that the ratio-based classification was the most significant prognostic factor, whereas the 1997 UICC/AJCC classification was not found to be an independent predictor of survival. In addition, the ratio-based classification showed a superiority to the 1997 UICC/AJCC classification with respect to stage migration.
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- The superiority of ratio-based lymph node staging in gastric carcinoma
Annals of Surgical Oncology
Volume 9, Issue 1 , pp 27-34
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Gastric carcinoma
- Lymph node classification
- Lymph node metastasis
- Prognostic factor
- TNM classification
- Lymph node ratio
- Industry Sectors
- Author Affiliations
- 1. Second Department of Surgery, Kansai Medical University, 10-15 Fumizonocho, 570-8507, Moriguchi, Osaka, Japan