舌神経由来と考えられた顎下部神経鞘腫の1例

• Published in: 日本口腔外科学会雑誌 Vol. 62; no. 3; pp. 124 - 128
• Main Authors: 林田, 悠, 武富, 孝治, 原田, 真知子, 古場, 朗洋, 田上, 隆一郎, 楠川, 仁悟
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本口腔外科学会 20.03.2016
• Subjects: 口底; 神経鞘腫; 舌神経; 顎下部
• ISSN: 0021-5163; 2186-1579
• DOI: 10.5794/jjoms.62.124

Schwannoma, an ectodermal tumor arising from Schwann cells, occasionally occurs in the oral and maxillofacial region. We report a case of schwannoma arising in the lingual nerve. The patient was a 53-year-old man who came to our hospital with a chief complaint of a swelling, an elastic soft and movable painless mass that was palpated in the right submandibular region. Magnetic resonance imaging revealed a well-defined, multilocular and lobular tumor pushing the right mandibular gland dorsally. It showed high intensity on T1-weighted images and heterogeneous high intensity on T2-weighted images. Schwannoma was diagnosed on needle biopsy. In December 2013, tumor resection with concurrent resection of the right submandibular gland and sublingual gland was performed with the patient under general anesthesia. Because the tumor was contiguous with the lingual nerve, the lingual nerve was sacrificed. Histopathological examination revealed Antoni A and B mixed type schwannoma.