{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T18:38:34Z","timestamp":1772217514041,"version":"3.50.1"},"reference-count":7,"publisher":"BMJ","issue":"5","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2019,5,1]]},"published-print":{"date-parts":[[2019,5,11]]},"abstract":"<jats:p>Schwannomas are benign tumours arising from Schwann cells in the peripheral nerve. The schwannoma of the accessory nerve is a very rare entity. We report a case of Schwannoma of the extracranial accessory nerve. A 22-year-old man presented with a slow-growing mass, located on the right upper neck. The patient did not have any neurological deficit. CT scan showed a hypodense mass behind sternocleidomastoid muscle. The suspected diagnosis was an adenopathy of the accessory spinal chain. Surgery was done via transcervical approach. The histopathological analysis concluded with a diagnosis of schwannoma. No recurrence was noted at the follow-up examination 29 months after surgery.<\/jats:p>","DOI":"10.1136\/bcr-2018-228647","type":"journal-article","created":{"date-parts":[[2019,5,14]],"date-time":"2019-05-14T07:56:47Z","timestamp":1557820607000},"page":"e228647","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":5,"title":["Schwannoma of the extracranial portion of the accessory nerve presenting as spinal adenopathy"],"prefix":"10.1136","volume":"12","author":[{"given":"Mohamed Mehdi","family":"El Fakiri","sequence":"first","affiliation":[{"name":"Laboratory of Anatomy, Faculty of Medicine and Pharmacy, Ibn Zohr University, Agadir, Morocco"},{"name":"Department of Otorhinolaryngology, Hopital du 20 Aout, Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meryem","family":"Lahjaouj","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Hopital du 20 Aout, Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammed","family":"Roubal","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Hopital du 20 Aout, Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammed","family":"Mahtar","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Hopital du 20 Aout, Casablanca, Morocco"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,5,13]]},"reference":[{"key":"2025082804011934000_12.5.e228647.1","first-page":"1732","article-title":"Schwannoma of the spinal accessory nerve: a case report","volume":"7","author":"Kohli","year":"2013","journal-title":"J Clin Diagn Res"},{"key":"2025082804011934000_12.5.e228647.2","first-page":"MD01","article-title":"Paediatric Extracranial Spinal Accessory Nerve Schwannoma: An Extremely Rare Case Report","volume":"10","author":"Chakravarti","year":"2016","journal-title":"J Clin Diagn Res"},{"key":"2025082804011934000_12.5.e228647.3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1155\/2013\/973045","article-title":"Diagnosis and management of extracranial head and neck schwannomas: a review of 27 cases","volume":"2013","author":"Yasumatsu","year":"2013","journal-title":"Int J Otolaryngol"},{"key":"2025082804011934000_12.5.e228647.4","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1007\/s12070-015-0925-5","article-title":"Extracranial Head and Neck Schwannomas: Our Experience","volume":"68","author":"Shrikrishna","year":"2016","journal-title":"Indian J Otolaryngol Head Neck Surg"},{"key":"2025082804011934000_12.5.e228647.5","doi-asserted-by":"crossref","first-page":"233","DOI":"10.47102\/annals-acadmedsg.V36N4p233","article-title":"Extracranial non-vestibular head and neck schwannomas: a ten-year experience","volume":"36","author":"Kang","year":"2007","journal-title":"Ann Acad Med Singapore"},{"key":"2025082804011934000_12.5.e228647.6","doi-asserted-by":"publisher","DOI":"10.1080\/00016480802179735"},{"key":"2025082804011934000_12.5.e228647.7","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-011-1491-4"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2018-228647","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,28]],"date-time":"2025-08-28T11:01:28Z","timestamp":1756378888000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2018-228647"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,5,11]]},"references-count":7,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2019,5,13]]},"published-print":{"date-parts":[[2019,5,11]]}},"alternative-id":["10.1136\/bcr-2018-228647"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2018-228647","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,5,11]]}}}