Endoscopic endonasal approaches to the cavernous sinus

Area of Science:

• Neurosurgery
• Endoscopic Skull Base Surgery
• Cavernous Sinus Surgery

Background:

• Surgical access to the cavernous sinus (CS) presents challenges, with traditional transcranial approaches risking cranial nerve damage.
• Microscopic transsphenoidal approaches offer a medial route but have limited visualization.
• The endoscopic endonasal approach (EEA) provides enhanced visualization for medial CS access.

Purpose of the Study:

• To evaluate the safety and efficacy of the endoscopic endonasal approach for cavernous sinus tumor resection.
• To assess outcomes and complications associated with EEA for CS tumors.

Main Methods:

• Retrospective chart review of patients undergoing purely endoscopic endonasal approach to the CS.
• Analysis of surgical approaches, pathologies, resection rates, and complications between January 2004 and February 2011.

Main Results:

• 41 of 400 (10.3%) endoscopic skull base cases involved the CS.
• Pituitary macroadenoma was the most common pathology (58.5%).
• Gross total resection was achieved in 43.9% of cases, with no postoperative CSF leaks and low overall morbidity.

Conclusions:

• The endoscopic endonasal approach is a safe and effective medial option for selected CS tumor resections.
• EEA offers improved visualization and low complication rates compared to traditional methods.
• Various reconstructive options are available for EEA in CS surgery.