Assessment of Knowledge of Primary Health Care Workers

Oral cancer is one of the 10 most frequent cancers worldwide with about three-quarters of all cases occurring in the developing countries . The term “oral cancer” includes all malignancies arising from the lips oral cavity nasopharynx and other ill-defined sites within the lip oral cavity and pharynx . The prevalence of oral cancer is particularly high among men; it is one of the most tenth common cancers worldwide. Incidence rates for oral cancer vary in men from 1-10 cases per 100 000 inhabitants in many countries. In south-central Asia cancer of the oral cavity ranks amongst the three most common types of cancer. However sharp increases in the incidence rates of oral/pharyngeal cancers have been reported for several countries and regions such as Denmark Germany Scotland central and Eastern Europe and to a lesser extent Australia Japan New Zealand and the USA . Oral cancer is one of the health problems in the Sudan due to the habit use of Toombak which contain high level of the potent carcinogenic component of the tobacco .