Abstract
A clinicopathological study on squamous cell carcinomas of the upper alveolus and gingiva (17 patients) and the hard palate (9 patients) was performed to evaluate the correlation between the features of the primary lesion and prognosis. The results were as follows:
1. The palatal type in carcinoma of the upper alveolus and gingiva, carcinoma of the hard palate, and the posterior type carcinomas tend to have a high local recurrence rate and uncontrol rate. These clinical types also have a high rate and various aspects of cervical lymphnode metastasis.
2. According to the histopathological malignancy grade, the high malignancy group had a high local recurrence rate and the poor prognosis.
3. The five-year cumulative survival rate of all patients was 71.1 %, 79.6 % with carcinoma of the upper alveolus and gingiva and 55.6 % with carcinoma of the hard palate.
4. The unfavorable prognostic factors were the palatal type of carcinoma of the upper alveolus and gingiva, carcinoma of the hard palate, posterior type, advanced stage, and high histopathologic grade of malignancy.
