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Olfactory groove meningiomas.

Stephen J Hentschel1, Franco DeMonte

  • 1The University of Texas M. D. Anderson Cancer Center, Department of Neurosurgery, Houston, Texas 77030-4009, USA.

Neurosurgical Focus
|January 27, 2005
PubMed
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Olfactory groove meningiomas (OGMs) are large skull base tumors. Microsurgery offers excellent results with complete resection and low complications, especially when hyperostotic bone is removed.

Area of Science:

  • Neurosurgery
  • Skull Base Surgery
  • Oncology

Background:

  • Olfactory groove meningiomas (OGMs) are tumors arising from the anterior skull base.
  • These tumors can grow significantly before diagnosis.
  • Differentiating OGMs from tuberculum sellae meningiomas is crucial due to anatomical location and optic pathway involvement.

Purpose of the Study:

  • To evaluate the surgical outcomes of olfactory groove meningiomas.
  • To assess the efficacy of microsurgical techniques in OGM resection.
  • To identify factors influencing recurrence and complications.

Main Methods:

  • Retrospective review of 13 OGM cases treated between 1993-2003.
  • Analysis of clinical presentation, imaging, surgical procedures, and follow-up data.

Related Experiment Videos

  • All patients underwent bifrontal craniotomies and biorbital osteotomies.

    • Main Results:

    • Mean OGM size was 5.7 cm in 13 patients (12 female, 1 male, mean age 56).
    • 11 complete resections and 2 subtotal resections were performed.
    • No surgical complications or recurrences were observed during a mean 2-year follow-up.

    Conclusions:

    • Microsurgical resection of OGMs yields excellent outcomes with high rates of complete tumor removal.
    • Minimizing recurrence risk requires complete excision of hyperostotic bone and dura from the anterior skull base.
    • Current microsurgical techniques are effective for managing olfactory groove meningiomas.