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1 results

  • Focal defect of mastoid bone shell in the region of the transverse-sigmoid junction: a new cause of pulsatile tinnitus

  • J Xue, T Li, X Sun, Y Liu
  • Journal:
    The Journal of Laryngology & Otology / Volume 126 / Issue 4 / April 2012
    Published online by Cambridge University Press:
    07 February 2012, pp. 409-413
    Print publication:
    April 2012
  • Objective:

    Pulsatile tinnitus usually originates from vascular structures, causing an arterial or venous bruit. We report a new cause of pulsatile tinnitus: a focal defect of the mastoid bone shell in the region of the transverse-sigmoid junction, with a normal transverse-sigmoid sinus.

    Participants and intervention:

    Three patients complained of unilateral, pulsatile tinnitus present for many years. They were identified as having a focal defect of the mastoid bone shell in the region of the transverse-sigmoid junction. The patients underwent transmastoid reconstruction of the mastoid bone shell overlying the transverse-sigmoid sinus.

    Results:

    All three patients reported immediate resolution of their symptoms, and were asymptomatic at final follow up.

    Conclusion:

    A focal defect of the mastoid bone shell overlying the transverse-sigmoid sinus, with no abnormality of the sinus itself, may be a new cause of pulsatile tinnitus. Surgical reconstruction of the mastoid bone shell overlying the transverse-sigmoid sinus can provide lasting symptom relief for patients with pulsatile tinnitus and computed tomographic evidence of the defect.