著者

野谷 健一 石川 誠 半沢 元章 中村 博行 戸塚 靖則 福田 博

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.36, no.10, pp.2312-2321, 1990

被引用文献数

1

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The tumor extension of T4 cases of upper gum carcinoma (UG-Ca) is clinically similar to T2 cases of maxillary sinus carcinoma (NIS-Ca). However, the prognosis of the former is remarkably unfavorable compared with the latter. A comparative study between 16 cases of UG-Ca (T4) and 14 cases of MS-Ca (T2) was undertaken in order to assess the difference in their prognosis.<BR>The 5 year accumulative survival rate of UG-Ca (T4) was 36.5% and MS-Ca (T2) was 92.3%. While the control rate of the primary lesion after initial therapy, the former was 50% and the latter was 78.6%. As for the rat of cervical metastases noted clinically, it was 75% and 35.7% respectively. Bilateral cervical metastases was noted in 6 cases of UG-Ca (T4) and none in MS-Ca (T2). With respect to the 5 year accumulative survival rate of the cases with pathologically confirmed nodal involvement, it was 0% for UG-Ca (T4) but MS-Ca (T2) was 66.7%.<BR>The unfavorable prognosis for UG-Ca (T4) cases was attributed to failure to control primary and cervical metastases. Therefore, it is necessary to reexamine the margin of the primary resection and the timing for carrying out RND.