Navigation-Guided Nasal Endoscopy to Remove the Cavernous Venous Malformation of the Orbital Apex Through the Sphenoid Approach.

Objective: To explore the feasibility of navigation-guided sinus endoscopy to remove the cavernous vascular malformation of the orbital apex through the sphenoid approach.

Methods: A retrospective series of non-control cases were collected. From May 2012 to December 2019, patients with imaging findings of cavernous venous malformation in the orbital apex were collected at the Eye Hospital Affiliated to Nanchang University. All patients underwent navigation guided sinusoscopy through the sphenoid approach to remove the cavernous venous malformation of the orbital apex. Analyze the changes of visual function and postoperative complications before and after operation.

Results: Twelve patients were collected, including 3 males and 9 females aged between 32 and 59. In 3 patients without visual impairment, the postoperative visual function was still normal. The remaining 9 patients all had visual impairment. Among them, 3 patients had fully recovered normal visual function after operation, 2 patients had improved visual function compared with preoperative, and 4 patients had no change in postoperative visual acuity. There were no complications in 3 of the 12 patients, and 9 patients had transient limited intraocular rotation with mild limitation of diplopia after operation, and all returned to normal within 1 month after surgery.

Conclusion: Navigation-guided sinus endoscopy through the sphenoid approach to remove the cavernous venous malformation of the orbital apex is an effective and feasible surgical method.