Abstract
Intraorbital tumor could be approached by numerous surgical methods. The neuroendoscopic endonasal approach could provide a feasible corridor for indicated tumors. Herein we present a series of 6 consecutive intraorbital tumors from April 2018 to October 2020, which received endonasal endoscopic resection. Cadaveric dissection was performed for the intraconal approach, and the literature was also reviewed. Five tumors were located intraconally, while one extraconally. The pathology revealed 1 angioleiomyoma, 1 cavernous hemangioma, 1 pilocytic astrocytoma, 1 meningioma, and 2 schwannomas. Five of the six achieved gross total resection, including 3 tumors with lateral extension beyond the optic nerve. Preoperative visual deterioration was observed in 4 of the 6 patients, and all got improvement postoperatively. Transient oculomotor nerve palsy was presented in one patient postoperatively. No cerebrospinal fluid leakage, enophthalmos, or strabismus was observed. The median follow-up time is 27 months (11~41 months). At the 6-month follow-up, the visual acuity remained unchanged compared with that at discharge. Proptosis was resolved in 2 of the 3 patients; diplopia was improved in one patient. In conclusion, endoscopic endonasal intraconal approach could be suitable for selected pathological conditions, and for both medial or beyond medial extraconal and intraconal orbital tumors.
Highlights
The intraorbital tumor is a variety of conditions commonly seen by neurosurgeons
Intraorbital tumor is a variety of conditions that may need surgical resection
External approaches and transcranial approaches have been used in the resection of intraorbital tumors, especially for those located superior or anterior to the orbit
Summary
The intraorbital tumor is a variety of conditions commonly seen by neurosurgeons. Endoscopic Resection For Intraorbital Tumors involving the orbit. Norris et al applied the endoscope to remove orbital foreign bodies and treat fistula through transconjunctival or external approaches in 1981 [3]. The endoscopic endonasal approach could provide a minimally invasive corridor to the skull base, extending from the cribriform plate to C2. The lateral skull base tumor involving the orbit and the pterygopalatine fossa could be approached via an endoscopic endonasal approach, pioneered by Kassam AB et al [4, 5]. The endoscopic endonasal approach could provide an alternative corridor for the intraorbital lesions. We present a consecutive cohort of 6 intraorbital tumors with different pathologies in our center to illustrate our opinion on choosing the best approach. The clinical features, surgical outcomes, and technical advantages are presented, and related literature is reviewed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
