International Journal of Head and Neck Surgery

Register      Login

VOLUME 12 , ISSUE 3 ( July-September, 2021 ) > List of Articles


Extracranial Head and Neck Schwannomas: An Institutional Experience

KU Raghavendra Prasad, PR Beluregowda, MV Vinay Kumar, TS Ramitha

Keywords : Extracranial, Nerve of origin (NOO), Schwannoma, Single institution

Citation Information : Prasad KR, Beluregowda P, Kumar MV, Ramitha T. Extracranial Head and Neck Schwannomas: An Institutional Experience. Int J Head Neck Surg 2021; 12 (3):101-105.

DOI: 10.5005/jp-journals-10001-1443

License: CC BY-NC 4.0

Published Online: 17-12-2021

Copyright Statement:  Copyright © 2021; The Author(s).


Extracranial schwannomas of head and neck domain are rare neoplasms. Most of the times, these tumors occur as asymptomatic neck swellings which masquerade to cervical lymphadenopathy, carotid body tumors, bronchial cyst, vallecular cyst. We present ten cases of head and neck schwannomas who have been treated and followed up between June 2006 to march 2020 in the department of otorhinolaryngology of Hassan Institute of Medical Sciences, Hassan, Karnataka State, India. These patients have been retrospectively reviewed. The main aim of the study is to know the NOO(nerve of origin) preoperatively and on table. Also to know the unusual sites of schwannoma in head and neck domain. The age group is between 10yrs to 50ys and female predominance of 50% in our study. Seven patients presented with neck swelling and three patients with pressure symptoms. Pre-operative diagnosis is mainly on clinical suspicious. Radiological imaging like CT scan/MRI may be helpful in diagnosis. FNAC is adjunctive tool for diagnosis. Among 10 patients nerve of origin could make out in 7 patients. Three from sympathetic, three from vagus and one from Internal Laryngeal nerve. In three patients nerve of origin could not make out. Intracapsular dissection of the tumor with preservation of nerve of origin is most recent common modality of treatment. Neurological deficit after tumor excision is common in large tumor excision. Early recognition and treatment is best for preservation of the nerve of origin.

  1. Kumar AB, Rajan P. Schwannoma of the tongue: a case report. Calicut Med J 2004;2(2):e4. DOI: 10.1016/j.ooe.2004.09.003
  2. Ducatman BS, Scheithauer BW, Piepgras DG, et al. Malignant peripheral nerve sheath tumors. A clinicopathologic study of 120 cases. Cancer 1986 15;57(10):2006–2021. DOI: 10.1002/1097-0142(19860515)57:10<2006::aid-cncr2820571022>;2-6
  3. Colreavy MP, Lacy PD, Hughes J, et al. Head and neck schwannomas—a 10 year review. J Laryngol Otol 2000;114(2):119–124. DOI: 10.1258/0022215001905058
  4. Zhang H, Cai C, Wang S, et al. Extracranial head and neck schwannomas: a clinical analysis of 33 patients. Laryngoscope 2007;117(2):278–281. DOI: 10.1097/01.mlg.0000249929.60975.a7
  5. Liu HL, Yu SY, Li GK, et al. Extracranial head and neck schwannomas: a study of the nerve of origin. Eur Arch Otorhinolaryngol 2011; 268(9):1343–1347. DOI: 10.1007/s00405-011-1491-4
  6. Haider M, Rahim M, Bashar NM, Hossain M, Islam SM. Schwannoma of the Base of the Tongue: A Case Report of a Rare Disease and Review of Literatures. Case Reports in Surgery. 2020 Dec 29;2020. DOI: 10.1155/2020/7942062
  7. Sharma DK, Sohal BS, Parmar TL, et al. Schwannomas of head and neck and review of literature. Indian J Otolaryngol Head Neck Surg 2012;64(2):177–180. DOI: 10.1007/s12070-011-0248-0
  8. Jadwani S, Bansod S, Mishra B. Intraoral schwannoma in retromolar region. J Maxillofac Oral Surg 2012;11(4):491–494. DOI: 10.1007/s12663-010-0100-1
  9. Gosk J, Gutkowska O, Kulinski S, et al. Multiple schwannomas of the digital nerves and superficial radial nerve: two unusual cases of segmental schwannomatosis. Folia Neuropathol 2015;53(2):158–167. DOI: 10.5114/fn.2015.52413
  10. Gilmer-Hill HS, Kline DG. Neurogenic tumors of the cervical vagus nerve: report of four cases and review of the literature. Neurosurgery 2000;46(6):1498–1504. DOI: 10.1097/00006123-200006000-00036
  11. Ozlugedik S, Ozcan M, Unal T, et al. Cervical sympathetic chain schwannoma: two different clinical presentations. Tumori J 2007;93(3):305–307. DOI: 10.1177%2F030089160709300316
  12. Furukawa M, Furukawa MK, Katoh K, et al. Differentiation between schwannoma of the vagus nerve and schwannoma of the cervical sympathetic chain by imaging diagnosis. Laryngoscope 1996;106(12):1548–1552. DOI: 10.1097/00005537-199612000-00021
  13. Zbäuren P, Markwalder R. Schwannoma of the true vocal cord. Otolaryngology—Head and Neck Surgery. 1999 Dec;121(6):837-839. DOI: 10.1053%2Fhn.1999.v121.a99282
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.