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Schwannoma arising from the sublingual glandular branch of the lingual nerve radiologically masquerading as sublingual gland tumor

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Abstract

We report a rare case of schwannoma arising from the sublingual glandular branch of the lingual nerve radiologically masquerading as sublingual gland tumor. A 42-year-old female was referred to our department with a painless swelling in the left submandibular region. Contrast-enhanced computed tomography showed a well-circumscribed, heterogeneous low-density tumor with cystic change in the left sublingual region. Magnetic resonance imaging showed a well-circumscribed, heterogeneous sublingual tumor with low-signal intensity on T1-weighted image and high-signal intensity in T2-weighted image. The lesion was diagnosed radiologically as benign sublingual gland tumor. The patient underwent resection of sublingual gland tumor under general anesthesia. There was no definitive continuity between the tumor and the sublingual gland, and the tumor originated from sublingual glandular branch of the lingual nerve. Pathological examination of the specimen showed schwannoma with highly cellular areas (Antoni A) and hypocellular areas (Antoni B). The postoperative course was uneventful without lingual nerve palsy, and there was no recurrence 4 years after surgery.

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Authors and Affiliations

  1. Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Medical Center, 4-57 Urafunecho, Minami-ku, Yokohama, Kanagawa, 232-0024, Japan

    Shuhei Minamiyama & Makoto Hirota

  2. Department of Oral and Maxillofacial Surgery/Orthodontics, Yokohama City University Hospital, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan

    Toshinori Iwai, Satomi Sugiyama, Yuichiro Hayashi & Kenji Mitsudo

Authors
  1. Shuhei Minamiyama
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  2. Toshinori Iwai
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  3. Satomi Sugiyama
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  4. Yuichiro Hayashi
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  5. Makoto Hirota
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  6. Kenji Mitsudo
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Correspondence to Toshinori Iwai.

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Shuhei Minamiyama, Toshinori Iwai, Satomi Sugiyama, Yuichiro Hayashi, Makoto Hirota, and Kenji Mitsudo declare that they have no conflict of interest.

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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.

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Minamiyama, S., Iwai, T., Sugiyama, S. et al. Schwannoma arising from the sublingual glandular branch of the lingual nerve radiologically masquerading as sublingual gland tumor. Oral Radiol 37, 125–129 (2021). https://doi.org/10.1007/s11282-020-00447-w

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  • DOI: https://doi.org/10.1007/s11282-020-00447-w

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