DESCRIPTIVE EPIDEMIOLOGY OF ORAL NEOPLASMS IN SUDAN 1970-1985 AND THEROLE OF TOOMBAK

Data from 1,916 cases of oral neoplasms occurring in the Sudan in a 16 -year period, from January 1970 to December 1985, were retrieved and a nalysed, The study revealed a relatively high frequency of oral neopla sms in comparison with neighbouring countries. In this study, squamous -cell carcinoma was the most common oral malignancy (66.5%), followed by tumours of the salivary gland (14.7%), neoplasms of nonodontogenic and non-epithelial origin (9.6%) and odontogenic neoplasms (8.6%). Men had a higher frequency than women. The older age group of both gender s showed a relatively high frequency of squamous-cell carcinoma. Among northern Sudanese there was a high rate of squamous-cell carcinoma, w hile southern Sudanese showed a high rate of odontogenic and salivary- gland neoplasms. The use of toombak has been stated to play a major ro le in tile aetiology of oral squamous-cell carcinoma in the Sudan, and is suspected to be associated with neoplasms of the salivary glands. (C) 1995 Wiley-Liss, Inc.