上顎癌の分類試案-3-JJC案とAJC案の比較 (内藤儁教授退官記念論文集)

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The Proposals of TNM classification of maxillary sinus carcinoma by the Japanese Joint Committee (JJC proposal) and the American Joint Comittee for Cancer Staging and End Results Reporting (AJC proposal) were introduced. The JJC proposal was proposed to UICC in 1977 and must be defined the reasonability in the clinical field by our japanese phisicians. 718 cases which were treated by authors from 1957 to 1977 as the primary cases were provided in order to classify to JJC and AJC proposals. The cases belonged to T1, T2, T3 and T4 were 2%, 25%, 48% and 25%, respectively in JJC proposal and 0%, 8%, 45% and 47% in AJC proposal. The distribution of cases was more suitable in JJC proposal than that in AJC.The cumurative survival rates in 5 year calicurated by TNM categories in the both proposals. The rates in T2N0M0, T3N0M0 and T4N0M0 were 39%, 32% and 13%, respectively in JJC proposal and 52%, 35% and 21% in AJC. It seems to be appropriate that the better survival rate of T2 cases after JJC proposal, since the external periosteum is a strong barrior against the tumour infiltration. The prognosis of T3 cases after JJC proposal was still better than that of T4 cases. The stage-grouping after JJC was proposed and the 5 year cumurative survival rates in Stage I, II, III and IV were 41%, 32%, 16% and 4%, respectively. The prognosis by the stage-grouping were significantly separated by JJC proposal.Of the 573 cases which were N0M0 cases and observed more than three years, the 3 year crude survival rates were discussed on the matrix table of the T categories after JJC and AJC proposals. The T3 cases after AJC proposal were divided to T2 and T3 after JJC with the survival rates of 43% and 35%, respectively. Furthermore, the T4 cases of AJC were divided to T3 and T4 by JJC and the survival rates showed 34% and 16%, respectively. The JJC proposal related on the prognosis more closely.The direction of tumour infiltration in the same T category showed little difference of survival rates and the policy of treatment was nearly same in the each T category after JJC proposal. Varidification of any conceivable TNM classification requires that the treatment and prognosis for patients falling in a given T category be of similar order. It might be concluded that the TNM classification after JJC proposal is more useful than that after AJC.
耳鼻咽喉科臨床学会の論文

上顎癌の分類試案-3-JJC案とAJC案の比較 (内藤儁教授退官記念論文集)

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