Multi-Center, Multi-National Outcomes Following Endoscopic Endonasal Resection of Nonfunctional Pituitary Adenomas

Area of Science:

• Neurosurgery
• Endocrinology
• Otolaryngology

Background:

• Nonfunctioning pituitary adenomas (NFPA) are common pituitary tumors.
• The endoscopic endonasal approach (EEA) offers improved treatment options.
• Limited multi-center data exists on EEA outcomes for NFPA.

Purpose of the Study:

• To establish benchmark outcomes for EEA resection of NFPA.
• To provide generalizable data from an international, multi-center review.
• To assess the safety and efficacy of EEA for NFPA across healthcare systems.

Main Methods:

• Retrospective review of 1,097 patients undergoing EEA for NFPA at four international centers.
• Data collection included symptoms, tumor characteristics, intraoperative details, complications, and long-term outcomes.
• Descriptive statistics were generated using means and weighted averages.

Main Results:

• Gross total resection rate was 66% in 1,097 patients (mean age 55.3).
• Significant improvement in vision loss (89%) and headache (81%) was observed.
• Common complications included hyponatremia (7.5%) and AVP-D (6.6%); severe complications like stroke (0.4%) and death (0.1%) were rare.

Conclusions:

• EEA is a safe, effective, and generalizable treatment for NFPA across US and European centers.
• The procedure demonstrated a low rate of severe complications.
• Most patients experienced significant relief from headache and vision loss.