A histopathologic study was made on 393 primary tumors of oral cavity that were
examined at the Department of Pathology, College of Medicine, Seoul National
University, during a period of twelve years from 1963 to 1974. Following results were
obtained.
1. Of three hundred ninety three primary tumors of oral cavity, there were 164(41.7%)
benign and 229 (58.3%) malignant tumors.
2. Among all tumors of oral cavity, the tumor type in the highest incidence was
squamous cell carcinoma(38.9%), and next the common type were mixed tumor (18.8%)
and hemangioma (9.2%).
3. The benign oral tumors occurred frequently in the fifth decade (28. 3%) with mean
age of 43.9 years, and the malignant oral tumors occurred frequently in the third
facade(24.6%) with mean average of 39.0 years. In all them examined, two months of
age was the youngest, who had hemangioma and 83 years of age with squamous cell
carcinoma the oldest.
4. Out of 393 all tumors of oral cavity examined, 220 cases(56%)were in male and 173
cases (44%) in female. Among them, the malignant oral tumors showed male
predominance over female in ratio of 1.7:1, while there was no significant sex difference
in the benign oral tumors.
5. The site incidence in all oral tumors were the highest in tongue (26.0%) and next
common in palate (17.3%) and parotid gland (12.5%) in orders.
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