What question did this study set out to answer?

To assess the feasibility and safety of unilateral biportal endoscopic technique for C1–2 extradural tumor removal.

February 2, 2026Open Access

Unilateral Biportal Endoscopic Removal of a Cervical Extradural Schwannoma at the C1–2 Level

WYWoon Tak Yuh ICIl ChoiHallym University Dongtan Sacred Heart Hospital DPDon Y. ParkUniversity of California, Irvine

Key Points

To assess the feasibility and safety of unilateral biportal endoscopic technique for C1–2 extradural tumor removal.
Utilized unilateral biportal endoscopic technique
Focused on C1–2 level extradural schwannoma
Monitored surgical access and technique effectiveness
Successful removal of C1–2 extradural tumor reported
Demonstrated safety in approach
Proven effectiveness of endoscopic technique

Abstract

The C1–2 level is a relatively common location for extradural neurogenic tumors. However, surgical access to this region is anatomically demanding because of its close relationship to the vertebral artery and the spinal cord. To our knowledge, there have been no previous reports of using the unilateral biportal endoscopic (UBE) technique for such cases. We present the first successful removal of a C1–2 extradural tumor using UBE, demonstrating the feasibility, safety, and effectiveness of this approach.

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