Ameloblastoma: a survey of 199 cases in the University of College Hospital, Ibadan, Nigeria.

In a study of occurrence of tumors of the jaw seen in the University College Hospital over a 24-year period, 199 cases of histologically diagnosed ameloblastoma were found. Notable features of these lesions were extreme size at presentation and high frequency of recurrence. Ameloblastoma ranks next in frequency to fibroosseous lesions and salivary gland tumors in this community. The incidence in men exceeds that of women. The mandible was the location in over 85 percent of the cases. Six cases were suspected to have turned malignant following multiple surgical operations.