Abstract
The ameloblastoma belongs to a group of odontogenic tumors of epithelial origin. Itdevelops from enamel producing tissue, from follicles, periodontal membrane and epithelium of dentigerous cysts. In 80 % of cases it appears in the mandible and is located in the molar region, at the angle or the mandibular ramus. Radiographically the monocystic and polycystic forms are distinguished. Diagnosis is based upon the clinical, roentgenographic and histopathological appearance, but only the microscopic findings are conclusive. The above mentioned characteristics of the ameloblastoma are very well known and can be found in every textbook or report dealing with the disease. We were interested whether we could answer the questions in what percentage of cases it is pos sible to diagnose an ameloblastoma from roentgenograms alone. Before we present a few particularly selected cases we would like to survey the roentgenographic signs noticed in 150 x-ray films of cases, the diagnosis of which has been confirmed by biopsies: 1. In 80 % of cases the tumor is located in the mandible, usually in the molar region, angle or ramus and in 20 % of cases it is found in various sites in the maxilla. 2 . There are very intensive cystic radiolucencies with a sharp bright peripheral contour with serrated or groved edges in 21 % of cases. 3. Sclerotic bony limits in 5 %.
Published Version
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