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Endoscopic assisted transoral approach with palatal splitting for a giant retropharyngeal schwannoma: a challenging case

  • Received : 2021.03.14
  • Accepted : 2021.05.21
  • Published : 2022.04.30

Abstract

Retropharyngeal schwannoma is rare. To the best of our knowledge, only 18 cases have been published in the English literature. Complete surgical excision is the treatment of choice for schwannomas. Transoral approaches have been applied for smaller lesions, and external cervical approaches are preferred for larger and more complex lesions. In this report, we present a case of large retropharyngeal schwannoma that was excised using an endoscopic-assisted transoral approach with palatal splitting. Postoperative functional and oncologic outcomes were satisfactory with no reported intraoperative/postoperative complications.

Keywords

References

  1. Sakhrekar R, Peshattiwar V, Jadhav R, Kulkarni B, Badhwar S, Kale H, et al. Extremely rare case of retropharyngeal space benign plexiform schwannoma - excised through Smith-Robinson approach. Surg Neurol Int 2020;11:182. https://doi.org/10.25259/SNI_317_2020
  2. Giraddi G, Vanaki SS, Puranik RS. Schwannoma of parapharyngeal space. J Maxillofac Oral Surg 2010;9:182-5. https://doi.org/10.1007/s12663-010-0059-y
  3. Kumagai M, Endo S, Shiba K, Masaki T, Kida A, Yamamoto M, et al. Schwannoma of the retropharyngeal space. Tohoku J Exp Med 2006;210:161-4. https://doi.org/10.1620/tjem.210.161
  4. Hsieh CY, Hsiao JK, Wang CP. Retropharyngeal schwannoma excised through a transoral approach: a case report. Kaohsiung J Med Sci 2006;22:465-9. https://doi.org/10.1016/S1607-551X(09)70340-7
  5. Saito DM, Glastonbury CM, El-Sayed IH, Eisele DW. Parapharyngeal space schwannomas: preoperative imaging determination of the nerve of origin. Arch Otolaryngol Head Neck Surg 2007;133:662-7. https://doi.org/10.1001/archotol.133.7.662
  6. Gungadeen A, Lisseter R, Manickavasagam J, Paleri V. Transoral robotic resection of a large schwannoma in the retropharyngeal space. J Laryngol Otol 2016;130:401-3. https://doi.org/10.1017/S0022215116000190
  7. Triaridis C, Tsalighopoulos MG, Kouloulas A, Vartholomeos A. Posterior pharyngeal wall schwannoma (case report). J Laryngol Otol 1987;101:749-52. https://doi.org/10.1017/s002221510010266x
  8. Singh B, Ramjettan S, Maharaj TP, Ramsaroop R. Schwannoma of the posterior pharyngeal wall. J Laryngol Otol 1995;109:883-5. https://doi.org/10.1017/s0022215100131585
  9. Haraguchi H, Ohgaki T, Hentona H, Komatsuzaki A. Schwannoma of the posterior pharyngeal wall: a case report. J Laryngol Otol 1996;110:170-1. https://doi.org/10.1017/s0022215100133079
  10. Moore CE, Putzi M, McClatchey KD, Terrell J. Ancient schwannoma of the posterolateral pharynx: a benign lesion commonly mistaken for sarcoma. Otolaryngol Head Neck Surg 1997;117:S125-8. https://doi.org/10.1016/s0194-5998(97)70078-0
  11. Supiyaphun P, Snidvongs K, Shuangshoti S, Khowprasert C. Malignant transformation in a benign encapsulated schwannoma of retropharyngeal space: a case report. J Med Assoc Thai 1997;80:540-6.
  12. Huang CM, Leu YS. Schwannoma of the posterior pharyngeal wall. J Laryngol Otol 2002;116:740-1. https://doi.org/10.1258/002221502760238091
  13. Gaball CW, Meyer T, William P, Magdycz WP. Transoral approach to a retropharyngeal schwanoma: a case report and literature review. Otolaryngol Head Neck Surg 2004;131:304. https://doi.org/10.1016/j.otohns.2004.06.674
  14. Jovanovic MB, Milutinovic Z, Milenkovic S. Posterior pharyngeal wall schwannoma - an unusual case. J BUON 2008;13:577-9.
  15. Abou-Elfadl M, Lrhazi S, Mahtar M, Roubal M. Unusual retropharyngeal mass. Eur Ann Otorhinolaryngol Head Neck Dis 2015; 132:115-6. https://doi.org/10.1016/j.anorl.2015.01.002
  16. Raimondo L, Garzaro M, Mazibrada J, Pecorari G, Giordano C. Plexiform schwannoma of the posterior pharyngeal wall in a patient with neurofibromatosis 2. Ear Nose Throat J 2015;94:E17-9.
  17. Righini CA, Atallah I. A retropharyngeal mass. Diagnosis: Antoni A type schwannoma. Eur Ann Otorhinolaryngol Head Neck Dis 2015;132:57-8. https://doi.org/10.1016/j.anorl.2014.01.008
  18. Gallo S, Bandi F, Maffioli MP, Giudice M, Castelnuovo P, Fazio E, et al. Retropharyngeal space schwannoma: a rare entity. Iran J Otorhinolaryngol 2017;29:353-7.
  19. Ngu CYV, Gan CC, Tang IP. Transoral excision of retropharyngeal schwannoma: case report. Acta Otolaryngol Case Rep 2017;2:64-7. https://doi.org/10.1080/23772484.2017.1303773
  20. Escamilla Carpintero Y, Aguila Artal AF, Prenafeta Moreno M. Retropharyngeal schwannoma. An uncommon location. Acta Otorrinolaringol Esp (Engl Ed) 2020;71:193-4. https://doi.org/10.1016/j.otorri.2019.02.002