Introduction: Meningiomas are the third most common intracranial tumors in adults after
glial tumors and metastases. Olfactory groove meningiomas often grow without symptoms due
to their slow growth rates and location in the frontal lobe. Optic nerve sheath meningiomas are benign
neoplasms of the meninges surrounding the optic nerve. The coexistence of olfactory groove
and optic nerve sheath meningiomas without any history of neurofibromatosis or radiotherapy has
never been reported in the literature.
Case Report: A 36-year-old female patient was reported with anosmia, headache, memory disturbance,
and visual impairment and with the diagnosis of olfactory groove meningioma. In the postoperative
period, optic nerve sheath meningioma was detected in the imaging performed due to persistence
of visual impairment.
Conclusion: Olfactory groove and optic nerve sheath meningiomas are rare tumors and can be diagnosed
late because they progress slowly. Early diagnosis and treatment may affect the prognosis
and morbidity of these patients favorably.