裏層上皮の疣贅状増殖を呈した歯根囊胞の1例

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  • 髙畑 惣介
    公立学校共済組合近畿中央病院歯科口腔外科 大阪大学大学院歯学研究科口腔外科第一教室
  • 石井 庄一郎
    公立学校共済組合近畿中央病院歯科口腔外科
  • 藥師寺 登
    公立学校共済組合近畿中央病院歯科口腔外科
  • 古郷 幹彦
    大阪大学大学院歯学研究科口腔外科第一教室

書誌事項

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  • A case of radicular cyst exhibiting verrucous proliferation of the lining epithelium
  • リソウ ジョウヒ ノ ユウゼイジョウ ゾウショク オ テイシタ シコンノウホウ ノ 1レイ

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<p>Verrucous carcinoma arising from an odontogenic cyst is extremely rare. We report a case of radicular cyst exhibiting verrucous proliferation of the lining epithelium, which resembles verrucous carcinoma of the oral mucosa. Panoramic radiographs showed a well-defined radiolucent lesion surrounding the root of the left maxillary first molar. The clinical diagnosis was radicular cyst. The cyst was surgically removed, and the left maxillary first molar was extracted. Histopathological examination revealed a cystic structure consisting of dense fibrous connective tissue, and most of the luminal surface was covered with stratified squamous epithelium with marked thickening and hyperkeratosis. The squamous epithelium had an acute angular spire-like shape in some areas, while the basal layer showed nuclear enlargement and nuclear fission, but the atypia was not so obvious and there was no obvious invasive growth into the wall. The lesion was diagnosed as a radicular cyst exhibiting verrucous proliferation of the lining epithelium. No recurrence and metastasis have been observed to date.</p>

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