上唇に発生した Antoni A ・B 混在型神経鞘腫の1例

Schwannoma is a benign neoplasm arising from the Schwann cells of the neural sheath. It is a relatively rare tumor in the oral region. Schwannoma of the upper lip is extremely rare. We report a case of schwannoma of the upper lip. A 77-year-old woman visited our hospital because of a painless swelli...

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Bibliographic Details
Published in日本口腔外科学会雑誌 Vol. 55; no. 11; pp. 571 - 574
Main Authors 鈴木, りな, 上田, 愛, 仲盛, 健治, 安倍, 聖人, 出張, 裕也, 平塚, 博義
Format Journal Article
LanguageJapanese
Published 社団法人 日本口腔外科学会 20.11.2009
Subjects
MR 所見
上唇
神経鞘腫
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ISSN0021-5163
2186-1579
DOI10.5794/jjoms.55.571

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Summary:Schwannoma is a benign neoplasm arising from the Schwann cells of the neural sheath. It is a relatively rare tumor in the oral region. Schwannoma of the upper lip is extremely rare. We report a case of schwannoma of the upper lip. A 77-year-old woman visited our hospital because of a painless swelling of the left side of the upper lip. Magnetic resonance images showed a well-defined, liquiform lesion that was hypointense on T1-weighted images and hyperintense on T2-weighted images. The lesion was surgically resected. Histopathological examination of the resected tumor revealed a schwannoma, which was mixture of Antoni type A and B. As of 18 months after the operation, there is no evidence of recurrence.
ISSN:0021-5163
2186-1579
DOI:10.5794/jjoms.55.571