:A histochemical study

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We report a case of adenomatoid odontogenic tumor, between the right maxillary lateral incisor and cuspid teeth in a 18-year-old girl. On radiographic examination, the tumor was suspected of a globulo-maxillary cyst. We further discuss the tumor's histogenesis and the nature of eosinophilic material at light microscopic level using various histochemical stainings. Results were summarized as follows: 1) Duct-like and rosette-like structures were composed of columnar cells and spindle-shaped cells. 2) The nuclei of the columnar cells forming the duct-like structures were polarized away from the ducts. 3) Eosinophilic materials were often found in the above mentioned duct-like and rosettelike structures and solid cell masses in tumors. 4) The eosinophilic materials in the duct-like and rosette-like structures were positive for periodic acidschiff (PAS), alcian blue or toluidine blue staining, on the other hand the eosinophilic materials in the solid cell masses were negative for PAS. 5) Hematoxylinophilic materials in the solid cell masses were positive for PAS but negative for alcian blue.
社団法人日本口腔外科学会の論文