書誌事項
- タイトル別名
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- A case of malignant peripheral nerve sheath tumor of the mandibular gingiva
- カガク シニク ニ ハッセイ シタ アクセイ マッショウ シンケイ サヤ シュヨウ ノ 1レイ
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<p>Malignant peripheral nerve sheath tumors (MPNSTs) are very rare malignant neoplasia that arise from the peripheral nervous system and show nerve sheath differentiation. We report a case of primary malignant peripheral nerve sheath tumor of the mandibular gingiva.</p><p> A 53-year-old male was referred to our hospital presenting with a mass and pain in the mandibular gingiva. He had no appreciable disease and paralysis of the lower lip.</p><p> Computed tomography showed resorption of the mandible but no obvious lymph node metastasis.</p><p> Biopsy revealed a possible invasive unusual neuroectodermal tumor. Surgical resection was performed and the frozen section showed negative margins.</p><p> Histology revealed atypical spindle cells with clear chromatin and clear nucleolus which had proliferated and loosely infiltrated, but the cell boundaries were unclear. Immunohistochemical staining showed positive results for S-100 protein, p53, and vimentin, but negative results for pan-cytokeratin (AE1 / AE3), Melan A, and desmin. The Ki-67 labeling index was 10%. Accordingly, we diagnosed a low-grade peripheral nerve sheath tumor of the mandibular gingiva.</p><p> There were no signs of recurrence or metastasis at two years postoperatively. MPNSTs have poor prognoses and require careful follow-up.</p>
収録刊行物
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- 日本口腔外科学会雑誌
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日本口腔外科学会雑誌 67 (3), 194-199, 2021-03-20
社団法人 日本口腔外科学会
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詳細情報 詳細情報について
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- CRID
- 1390569557086331648
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- NII論文ID
- 130008040237
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- NII書誌ID
- AN00189163
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- ISSN
- 21861579
- 00215163
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- NDL書誌ID
- 031379910
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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- 使用不可