Our experience about trans sinusal frontal approach of olfactory groove meningiomas technical note

Background
Olfactory groove meningioma is the most frequent meningioma of the anterior skull base. It develops insidiously and its diagnosis is late when it reaches a large size resulting in visual impairment or blindness. Olfactory groove meningiomas can be surgically excised and gross total resection is possible. The choice of surgical approach is important. Surgical approaches that can be used include subfontal, transbasal and pterional approaches. In our practice we opt for the trans-sinus frontal approach to resect these tumors.

Objective
To evaluate the efficacy of the trans-sinus frontal approach for olfactory groove meningiomas

Methods
Twenty-eight (28) cases of olfactory groove meningiomas who were operated by the trans-sinus frontal approach were included.

Results
We collected 28 cases of olfactory groove meningioma over a period of 10 years from 2012-2022. The average age in our series was 54.46 years (32 to 73 years). Patient population included 8 male and 20 female patients. The presenting symptom is generally headaches found in 18 of our patients. A decrease in visual acuity or bilateral blindness of progressive course was observed in 8 patients. HIC syndrome was observed in 14 patients. Our patients were operated by a trans-sinus frontal approach with total resection in 96% of cases.


Conclusion
The only radical treatment for OGM is surgery. The trans-sinus frontal approach offers the possibility of performing a total excision with less morbidity and mortality.