Acoustic neuroma secondary prevention

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Simrat Sarai, M.D. [2]


Secondary prevention strategies following acoustic neuroma treatment include follow-up MRI scans.

Secondary Prevention

The approach for follow-up studies after treatment and diagnosis is uncertain and there is not enough data to support specific recommendations. Due to the potentially slow growth of acoustic neuromas, prolonged follow-up is necessary.[1]

  • Yearly scans for 10 years, and subsequent scans every three to five years if there has been no growth of acoustic neuroma is recommended for patients being managed with observation. Audiometry should also be performed on a regular basis.[2]
  • A follow-up MRI is performed within 6-12 months after surgical excision to document the completeness of tumor removal. Follow-up MRI should be obtained at 5 years and at 10 years, assuming complete tumor removal. If the findings on the 10-year follow-up MRI scan are normal, further imaging should be performed only if clinical circumstances require it.
  • Yearly scans for 10 years, and then every two years if no growth of acoustic neuroma is recommended for patients treated with radiotherapy.


  1. Jing Zou & Timo Hirvonen (2017). ""Wait and scan" management of patients with vestibular schwannoma and the relevance of non-contrast MRI in the follow-up". Journal of otology. 12 (4): 174–184. doi:10.1016/j.joto.2017.08.002. PMID 29937853. Unknown parameter |month= ignored (help)
  2. Ian F. Dunn, Wenya Linda Bi, Srinivasan Mukundan, Bradley N. Delman, John Parish, Tyler Atkins, Anthony L. Asher & Jeffrey J. Olson (2018). "Congress of Neurological Surgeons Systematic Review and Evidence-Based Guidelines on the Role of Imaging in the Diagnosis and Management of Patients With Vestibular Schwannomas". Neurosurgery. 82 (2): E32–E34. doi:10.1093/neuros/nyx510. PMID 29309686. Unknown parameter |month= ignored (help)