[Prevalence of head and neck lesions at the Technological University of Mexico (UNITEC) 1986-1988].

A prospective study of extra and intraoral biopsies diagnosed and processed at the School of Odontology of the Technological University of Mexico (UNITEC) in its various service units, within a two and a half year period covering from January 1986 to May 1988. Out of 12,456 patients, 73 biopsies and 7 exfoliative cytologies were performed, with 41 different lesions detected. The clinical features of the five conditions most frequently found in the study are emphasized and compared with findings reported in international literature regarding the same lesions.