This 73 y/o male was referred to MRI for evaluation of unsteady gait. Selected pre & post gadolinium enhanced images of the posterior fossa shown above demonstrate a small enhancing mass at the meatus of the left internal auditory canal, consistent with an acoustic neuroma. Increasing clinical symptomatology ultimately led to surgical resection which confirmed the diagnosis.

  1. Spickler EM, Govila L. The Vestibulocochlear Nerve. Semin Ultrasound CT MR 2002 Jun;23(3):218-37 PMID:12168998
  2. Rosenberg SI. Natural history of acoustic neuromas. Laryngoscope 2000 Apr;110(4):497-508 PMID:10763994
  3. Zealley IA, Cooper RC, Clifford KM, Campbell RS, Potterton AJ, Zammit-Maempel I, Baudouin CJ, Coulthard A. MRI screening for acoustic neuroma: a comparison of fast spin echo and contrast enhanced imaging in 1233 patients. Br J Radiol 2000 Mar;73(867):242-7 PMID:10817038
    Comment in: Br J Radiol. 2000 Oct;73(874):1129-30
  4. Okubo T, Yoshioka N, Hayashi N, Abe O, Masumoto T, Sasaki T, Ohtomo K. Contrast-enhanced magnetic resonance imaging of the cranial nerves in patients with acoustic schwannoma: correlation with surgical findings. Acta Otolaryngol Suppl 2000;542:13-7 PMID:10897393
  5. Schmalbrock P, Chakeres DW, Monroe JW, Saraswat A, Miles BA, Welling DB. Assessment of internal auditory canal tumors: a comparison of contrast-enhanced T1-weighted and steady-state T2-weighted gradient-echo MR imaging. AJNR Am J Neuroradiol 1999 Aug;20(7):1207-13 PMID:10472973
  6. Renowden SA, Anslow P. The effective use of magnetic resonance imaging in the diagnosis of acoustic neuromas. Clin Radiol 1993 Jul;48(1):25-8 PMID:8370215
  7. Lalwani AK, Jackler RK. Preoperative differentiation between meningioma of the cerebellopontine angle and acoustic neuroma using MRI. Otolaryngol Head Neck Surg 1993 Jul;109(1):88-95 PMID:8336973
  8. Mulkens TH, Parizel PM, Martin JJ, Degryse HR, Van de Heyning PH, Forton GE, De Schepper AM. Acoustic schwannoma: MR findings in 84 tumors. AJR Am J Roentgenol 1993 Feb;160(2):395-8 PMID:8424360
    Comment in: AJR Am J Roentgenol. 1993 Oct;161(4):906-7.
  9. Curtin HD, Hirsch WL Jr. Imaging of acoustic neuromas. Otolaryngol Clin North Am 1992 Jun;25(3):553-607 PMID:1625865
  10. Lhuillier FM, Doyon DL, Halimi PM, Sigal RC, Sterkers JM. Magnetic resonance imaging of acoustic neuromas: pitfalls and differential diagnosis. Neuroradiology 1992;34(2):144-9 PMID:1603314
  11. Anderson RE, Laskoff JM. Ramsay Hunt syndrome mimicking intracanalicular acoustic neuroma on contrast-enhanced MR. AJNR Am J Neuroradiol 1990 Mar-Apr;11(2):409 PMID:2107729

Use the Back or Backward button on your browser to return