Abstract
72 cases of ameloblastoma were obtained from the files of the Department of Pathology, School of Dentistry, Aichi-Gakuin University for the years January 1970 through December 1983. The cases were analyzed with respect to sex, age, duration, site, histopathology, and treatment. Of 72 patients, 63 had no previous therapy, while 9 received their initial treatment elsewhere. There were 38 males and 34 females, a ratio of 1.2: 1. At the time of diagnosis, the ages of all patients ranged from 11 to 71 years, with an average of 36.6 years. About 65% of patients were in the 2nd, 3rd, and 4th decades of life. The duration of symptoms varied from 2 days to 5 years, with an average of 12.6 months. 69 cases occurred in the mandible, with the molar-ramus region being the most frequent site of involvement. Only 3 were found in the maxilla. The left side of the mandible was affected 1.6 times more frequently than the right. Histopathologically, 44 cases were of the plexiform type, 15 the follicular, 10 the acanthomatous, and 2 the basal cell type. Only 1 case was of the granular cell type. Most of the findings in the present study agreed with previous available data from the literature on ameloblastomas.
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