{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T17:26:23Z","timestamp":1761845183253,"version":"3.41.2"},"reference-count":9,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2020,1,1]],"date-time":"2020-01-01T00:00:00Z","timestamp":1577836800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Otolaryngology - Head &amp; Neck Surgery"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:sec><jats:title\/><jats:p> Neurofibromatosis type 2 (NF2) is a rare genetic disease involving multiple tumors of the central and peripheral nervous systems. Most patients with NF2 have bilateral vestibular schwannomas; nonvestibular schwannomas may also develop. While the majority of patients may present with hearing impairment, tinnitus, dizziness and balance disorders, some may present with cutaneous manifestations. We describe the case of a 20-year-old man who initially presented with a solitary subcutaneous painless nodule in the left preauricular area without any other symptoms. He received excisional biopsy for the preauricular mass and the pathologic diagnosis was schwannoma. Magnetic resonance imaging of brain and neck revealed multiple mass lesions over the bilateral cerebellopontine angle cisterns, extending to the bilateral internal auditory canals, bilateral cervical neuroforamens, cervical and upper thoracic spinal canals, and left posterior neck. The patient was diagnosed with NF2 according to the clinical criteria. He underwent gamma knife stereotactic radiosurgery for bilateral vestibular schwannomas and is now under regular monitoring. <\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p> NF2 patients may present with an isolated solitary cutaneous schwannoma with no other associated clinical findings. Further assessment is thus warranted in young patients presenting with a peripheral schwannoma despite absence of other clinical findings. <\/jats:p><\/jats:sec>","DOI":"10.1186\/s40463-020-00438-1","type":"journal-article","created":{"date-parts":[[2020,6,26]],"date-time":"2020-06-26T15:04:32Z","timestamp":1593183872000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Neurofibromatosis type 2 initially presenting as a preauricular mass: A case report"],"prefix":"10.1177","volume":"49","author":[{"given":"Wei-Che","family":"Lan","sequence":"first","affiliation":[{"name":"Department of Otolaryngology Head and Neck Surgery, China Medical University Hospital, No.2, Yude Rd., North Dist., 404, Taichung City, Taiwan, Republic of China"},{"name":"Department of Otolaryngology Head and Neck Surgery, Asia University Hospital, No. 222, Fuxin Rd., Wufeng Dist., 413, Taichung City, Taiwan, Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu","family":"Aoh","sequence":"additional","affiliation":[{"name":"Department of Neurology, China Medical University Hospital, No.2, Yude Rd., North Dist., 404, Taichung City, Taiwan, Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rui-Yun","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Pathology, China Medical University Hospital, No.2, Yude Rd., North Dist., 404, Taichung City, Taiwan, Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hui-Chi","family":"Tien","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology Head and Neck Surgery, Asia University Hospital, No. 222, Fuxin Rd., Wufeng Dist., 413, Taichung City, Taiwan, Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5788-6821","authenticated-orcid":false,"given":"Chia-Der","family":"Lin","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology Head and Neck Surgery, China Medical University Hospital, No.2, Yude Rd., North Dist., 404, Taichung City, Taiwan, Republic of China"},{"name":"School of Medicine, China Medical University, Taichung, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,1,1]]},"reference":[{"doi-asserted-by":"publisher","key":"bibr1-s40463-020-00438-1","DOI":"10.1016\/B978-0-444-62702-5.00005-6"},{"doi-asserted-by":"publisher","key":"bibr2-s40463-020-00438-1","DOI":"10.1186\/1750-1172-4-16"},{"doi-asserted-by":"publisher","key":"bibr3-s40463-020-00438-1","DOI":"10.1177\/0883073816666736"},{"doi-asserted-by":"publisher","key":"bibr4-s40463-020-00438-1","DOI":"10.1212\/WNL.0000000000003418"},{"doi-asserted-by":"publisher","key":"bibr5-s40463-020-00438-1","DOI":"10.1016\/S0140-6736(09)60259-2"},{"doi-asserted-by":"publisher","key":"bibr6-s40463-020-00438-1","DOI":"10.1001\/jamaneurol.2017.1406"},{"doi-asserted-by":"publisher","key":"bibr7-s40463-020-00438-1","DOI":"10.1136\/jmg.37.12.897"},{"doi-asserted-by":"publisher","key":"bibr8-s40463-020-00438-1","DOI":"10.1016\/j.adengl.2016.12.025"},{"doi-asserted-by":"publisher","key":"bibr9-s40463-020-00438-1","DOI":"10.1002\/1097-0142(19951001)76:7<1181::AID-CNCR2820760713>3.0.CO;2-P"}],"container-title":["Journal of Otolaryngology - Head &amp; 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