Schwannoma in the Olfactory Groove: Two Case Reports

Area of Science:

• Neurosurgery
• Oncology
• Otorhinolaryngology

Background:

• Schwannomas are typically benign nerve sheath tumors.
• Olfactory groove schwannomas are exceptionally rare, posing diagnostic and surgical challenges.
• Endoscopic techniques offer minimally invasive options for skull base tumors.

Purpose of the Study:

• To report two rare cases of olfactory groove schwannoma.
• To describe the successful treatment using endoscopic excision.
• To discuss the management of associated cerebrospinal fluid rhinorrhea.

Main Methods:

• Case presentation of two patients with olfactory groove schwannoma.
• Surgical treatment via endoscopic endonasal approach.
• Repair of cerebrospinal fluid (CSF) leak using tissue grafts.

Main Results:

• Complete tumor resection was achieved in both cases.
• Post-operative cerebrospinal fluid rhinorrhea occurred in both patients.
• Successful repair of CSF leaks using vascularized tissue grafts.

Conclusions:

• Endoscopic excision is a viable and effective treatment for olfactory groove schwannomas.
• Cerebrospinal fluid rhinorrhea is a potential complication requiring prompt management.
• Tissue grafting provides a reliable method for CSF leak repair.