THE JOURNAL OF THE TOKYO DENTAL COLLEGE SOCIETY

Vol. 107 No. 6                   2007

ISSN: 0037-3710      UBIC: 342-J

ABSTRACT

Carcinoma occurring in the gingiva of the upper and the lower jaw contacts to maxilla and mandible. Howeve, it seems that there are differences in clinical features between the upper and lower jaw gingival carcinoma. We investigated clinico-pathological findings with gingival carcinoma of the upper and lower jaw in 147 patients who undergone bone resection. We compared T classification. X-rays findings. Histopathological findings, histologically confirmed cervical limph node metastasis and the overall 5 year cumulative survival rate of the upper and lower jaws. When T value increased for the upper and lower jaw, the ratio of bone invasion unrelated. Although X-ray finding showed no exact evidence of bone invasion, the invasion could be found histopathologically, and were more often in the upper jaw. The rate of secondary metastasis was. Higher in case of the lower jaw gingival carcinoma, however, one upper jaw patient confirmed Rouviere lymph node metastasis. With the upper jaw gingival carcinoma, the overall 5-year cumulative survival rate was 84.8%. With the lower jaw. Gingival carcinoma, the overall 5-year cumulative survival rate was 77.0 %. From the view point above, these carcinomas showed locus specificity, we suggest that the treatment plan of gingival carcinoma for the upper and the lower jaw should be different. Key words: upper gingival carcinoma, lower gingival carcinoma, bone invasion, Clinico pathological study, T classification

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