Abstract:Objective: To explore the surgical approach for removing tumors invading the superior orbital fissure and cavernous sinus.Methods: The diagnosis and treatment process of a patient with an orbital apex cavernous hemangioma was retrospectively analyzed. The clinical diagnosis was confirmed through imaging studies, intraoperative endoscopic examination, and postoperative pathological results. The treatment involved the removal of the tumor in the superior orbital fissure and cavernous sinus via a lateral orbital endoscopic approach.Results: The patient presented with decreased vision. CT and MRI examinations revealed a mass lesion in the left orbital superior orbital fissure area, located in the extraconal space. The tumor was removed using a lateral orbital endoscopic approach, and postoperative pathology confirmed the diagnosis of an orbital apex cavernous hemangioma.Conclusion: The endoscopic transorbital approach, preserving the lateral orbital rim, is a feasible, safe, and minimally invasive surgical technique for treating orbital cavernous hemangiomas. However, this method requires the surgeon to be familiar with orbital anatomy, proficient in interpreting imaging studies, and experienced in endoscopic surgery.