Introduction to Minimally Invasive Skull Base Surgery

Recent advancements in skull base surgery have introduced the Chopsticks mononostril approach as a breakthrough for minimizing patient morbidity. Traditionally, the endoscopic endonasal approach (EEA) required the resection of normal nasal structures to create a working corridor. This often included harvesting large nasoseptal flaps (NSF) to close the skull base defect. While effective at preventing cerebrospinal fluid (CSF) leaks, these traditional techniques frequently result in significant nasal complications, such as crusting and impaired olfaction. Consequently, surgeons have sought less invasive strategies to maintain clinical efficacy while prioritizing the patient's quality of life (QOL).

The Shift Toward the Chopsticks Mononostril Approach

The Chopsticks mononostril approach with sphenoid sinus cranialization (SSCT) represents a shift toward extreme minimal invasiveness. In this technique, surgeons work through a single nostril, significantly reducing the trauma to the nasal mucosa. Furthermore, the use of septal mucosa suturing and sphenoid sinus cranialization provides a robust closure without the extensive morbidity associated with the traditional nasoseptal flap technique (NSFT). A recent retrospective cohort study compared 41 patients treated with the SSCT technique against 41 patients treated with the traditional NSF technique. The results showed that clinical success remained high in both groups, but the patient experience differed significantly.

Clinical Outcomes and Quality of Life Benefits

Surgical outcomes for conditions like skull base chordomas and chondrosarcomas were comparable between the two techniques. Specifically, the SSCT group achieved a gross-total or subtotal resection rate of 97.6%, compared to 85.4% in the NSFT group. Moreover, the incidence of postoperative CSF leaks was not significantly different, proving that the less invasive closure is just as safe as the traditional flap. Most importantly, patients who underwent the Chopsticks mononostril approach reported significantly lower scores on the Endoscopic Endonasal Sinus and Skull Base Surgery Questionnaire (EES-Q). This indicates a much higher health-related quality of life, particularly in the physical and sinonasal domains, where the reduction in nasal trauma translates directly to fewer symptoms and a faster return to daily activities.

Conclusion

Transitioning to the Chopsticks mononostril approach offers a promising alternative for neurosurgeons and ENT specialists treating skull base lesions. By preserving more of the natural nasal anatomy and utilizing a novel suturing technique, surgeons can provide patients with excellent oncological results while minimizing long-term sinonasal morbidity. This evolution in surgical technique highlights the importance of balancing aggressive tumor resection with the preservation of functional quality of life.

Frequently Asked Questions

What is the Chopsticks mononostril approach?

This is a minimally invasive surgical technique for skull base lesions where the endoscope and surgical instruments are manipulated through a single nostril. It aims to reduce the footprint of surgery on the nasal structures.

How does this technique compare to the traditional nasoseptal flap?

The technique uses sphenoid sinus cranialization and mucosa suturing for closure instead of a large nasoseptal flap. It provides similar protection against CSF leaks but results in significantly less nasal morbidity and a better quality of life for the patient.

Is this approach safe for large tumors?

Yes, studies show that high rates of tumor resection (over 97%) are achievable with this method for lesions like chordomas and meningiomas, with no significant increase in postoperative complications.

Disclaimer: This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

• Passeri T et al. Chopsticks mononostril approach with sphenoid sinus cranialization and septal mucosa suturing: a new minimally invasive concept and closure technique for endoscopic endonasal approaches. J Neurosurg. 2026 Mar 13. doi: 10.3171/2025.8.JNS251403. PMID: 41825064.


• Rivera-Serrano CM, Snyderman CH, Gardner P, et al. Nasoseptal “rescue” flap: a novel modification of the nasoseptal flap technique for pituitary surgery. Laryngoscope. 2011;121:990-995.


• Amit M, et al. Determinants of quality of life following resection of skull base tumors: a systematic review. Front Oncol. 2016.