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Original Article
- Comparision between New Version of UICC-TNM Classification with Old Versions Including Japanese Classifications of Gastric Cancer Patientw
- Sung Sik Bae, Jong Inn Lee, Nan Mo Moon, Nam Sun Paik, Dong Wook Choi, Dae Yong Hwang, Ho Yoon Bang, Woo Chul Noh
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Journal of the Korean Cancer Association 1999;31(1): 43-53.
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Abstract
PURPOSE
This study was designed to examine the reliability and easy applicability of new version of UICC-TNM classification (UICC, 1997) compared with old version of UICC-TNM classification (UICC, 1992) and JRSGC (Japanese Research Society for Gastric Cancer) classification of gastric cancer.
MATERIALS AND METHODS
For 1043 patients who underwent curative resection from Jan. 1992 to Dec. 1996 in Korea Cancer Center (KCCH), old version of UICC-TMN classification and JRSGC classification were compared with the new version of UICC-TNM classification.
RESULTS
Correlation coefficient between topographic classification (old UICC-TNM, JRSGC) of lymph node and numeric classification was 0.9 (p<0.05). 5-year survival rates according to old UICC, TRSGC, new UICC classification were 94.9% at stage Ia; 96.6, 96.5, 97.1% at stage Ib; 73.8, 73.8, 73.0% at stage II; 54.1, 55.8, 58.0% at stage IIIa; 35.5, 42.0, 36.0% at stage IIlb; 25.9, 22.3, 23.9% at stage IV. 5-year survival rates of each classification had significant difference among stages (p<0.0001), but there was no significant difference among each classification.
CONCLUSION
The new version of UICC-TNM classification based on the number of involved lymph nodes allows a staging system as reliable as the old version of UICC-TNM and JRSGC classification. In addition, the new version of UICC-TNM classification can be applied without methodologic problems and seems more convenient and reproducible.
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