Fractionated stereotactic radiosurgery for treatment of acoustic neuromas

Danny Y Song, Jeffery A. Williams

Research output: Contribution to journalArticle

Abstract

Background: Microsurgery and single-fraction radiosurgery for acoustic neuromas are associated with high rates of control, but can result in facial palsy and trigeminal neuropathy. To reduce the morbidity of treatment for acoustic neuromas while maintaining efficacy, we explored fractionated stereotactic radiosurgery (FSR). Methods: We reviewed data for 31 acoustic neuromas in 30 patients treated with 25 Gy (linear accelerator) given in 5 consecutive daily fractions. The minimum follow-up was 6 months (6-44 months). The mean tumor volume was 1.1 cm3 (0.1-8.74 cm3). Results: All tumors remain controlled (9 smaller, 22 unchanged). No patient has experienced post-radiosurgery facial motor dysfunction. Two patients developed new trigeminal neuropathy; 2 patients with preexisting trigeminal nerve symptoms had improvement after FSR. Balance improved in 3 patients, was unchanged in 20 and worsened in 7 patients. Of the 12 patients with useful hearing (PTA ≤ 50 dB) prior to treatment, 9 patients retained useful hearing following FSR. Subjectively, of 25 patients with any hearing prior to treatment, 2 had improvement, 10 remained unchanged and 13 had worsening. Conclusions: Short course FSR for acoustic neuromas results in acceptable toxicity and may provide high control of tumors. Longer follow-up is needed to assess outcomes. Copyright (C) 2000 S. Karger AG, Basel.

Original languageEnglish (US)
Pages (from-to)45-49
Number of pages5
JournalStereotactic and Functional Neurosurgery
Volume73
Issue number1-4
StatePublished - May 2000

Fingerprint

Acoustic Neuroma
Radiosurgery
Trigeminal Nerve Diseases
Hearing
Therapeutics
Facial Nerve Diseases
Particle Accelerators
Trigeminal Nerve
Microsurgery
Facial Paralysis
Tumor Burden
Neoplasms
Morbidity

Keywords

  • Acoustic neuroma
  • Fractionation
  • Radiosurgery

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Fractionated stereotactic radiosurgery for treatment of acoustic neuromas. / Song, Danny Y; Williams, Jeffery A.

In: Stereotactic and Functional Neurosurgery, Vol. 73, No. 1-4, 05.2000, p. 45-49.

Research output: Contribution to journalArticle

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