Abstract
Due to the deep location, complex anatomy, and adjacent vital neurovascular structures, skull base surgery is challenging and requires specific approaches. The emerging endoscopic transorbital approach (eTOA) technique provides a new approach to the orbital content, spheno-orbital region, lateral cavernous sinus, and Meckel’s cave. In this study, the clinical utility and effectiveness of the eTOA are reported. Sixteen cases who underwent the eTOA were included in the current study. The patients were divided into 3 groups according to tumor location: Group A (intraorbital, 6 cases), group B (spheno-orbital, 7 cases), and group C (cavernous sinus, and Meckel’s cave, 3 cases). The clinical data and surgical results were analyzed. Eight meningiomas, 2 hemangiomas, 1 low-grade glioma, 1 instance of inflammatory hyperplasia tissue, 1 Langerhans cell histiocytosis, 1 epidermoid cyst, 1 trigeminal schwannoma, and 1 bone fibrosis hyperplasia were observed. The mean tumor diameter was 2.4 cm. A single case in Group A and Group C underwent biopsy (12.5%), and 1 case of fibrous dysplasia in Group B underwent sufficient orbit decompression (6.25%). The remaining 13 cases underwent gross total tumor resection (81.25%). No cerebral-spinal fluid leak or infection occurred. And no cosmetic problems or significant complications were observed during the follow-up. As a minimally invasive technique, the eTOA has unique advantages for carefully selected skull base lesions because of its direct route, short working distance, and distinct attack angle.
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Acknowledgements
We would like to thank the Department of Neurological Surgery, University of Pittsburgh School of Medicine, for providing training in skull base and endoscopic endonasal anatomy to Dr. Sheng Han.
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This study is funded by ShenYang Science and Technology Innovation Project (no. RC200610).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Longjie Li, Chenyu Li, Anhua Wu, and Zixun Wang. The first draft of the manuscript was written by Sheng Han, Xiaodi Han, and Hongyu Yang, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Han, X., Yang, H., Wang, Z. et al. Endoscopic transorbital approach for skull base lesions: a report of 16 clinical cases. Neurosurg Rev 46, 74 (2023). https://doi.org/10.1007/s10143-023-01980-y
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DOI: https://doi.org/10.1007/s10143-023-01980-y