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Related Experiment Video

Updated: Jun 26, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
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Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

Retrograde Transillumination: A Reliable Guide for Frontal Sinus Opening in Endoscopic Sinus Surgery.

Özgür Kemal1, Emre Demirel2, Mehmet Çelebi1

  • 1Ondokuz Mayıs University Faculty of Medicine, Department of Otolaryngology, Samsun, Türkiye.

Turkish Archives of Otorhinolaryngology
|June 25, 2026
PubMed
Summary

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A novel retrograde transillumination technique successfully identified the frontal sinus opening in all five endoscopic sinus surgery patients. This simple, low-cost method aids surgeons, especially with distorted anatomy.

Area of Science:

  • Otolaryngology
  • Minimally Invasive Surgery
  • Surgical Navigation

Background:

  • Accurate localization of the frontal sinus opening is critical for successful endoscopic frontal sinus surgery.
  • Traditional methods can be challenging, particularly with complex anatomical variations or distorted landmarks.

Purpose of the Study:

  • To describe and evaluate the feasibility of a simple, low-cost retrograde transillumination technique.
  • To assess its utility in identifying the frontal sinus opening during endoscopic surgery.

Main Methods:

  • A descriptive surgical series of five patients undergoing endoscopic frontal sinus surgery.
  • Standardized five-step retrograde transillumination technique involving angled endoscopy, probing, room darkening, and endoscope light placement.
Keywords:
Chronic rhinosinusitisendoscopic sinus surgeryfrontal sinusrevision endoscopic sinus surgerytransillumination

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  • Confirmation of frontal sinus opening localization using neuronavigation.

    • Main Results:

    • Retrograde transillumination successfully identified the frontal sinus opening in all five patients.
    • The technique was effective even with distorted landmarks and frontal recess cell variants.
    • It guided surgical extent (Draf IIa-b/III) and was particularly useful in complex cases.

    Conclusions:

    • Retrograde transillumination is a pragmatic and cost-effective adjunct for intraoperative frontal sinus opening localization.
    • It complements anatomical knowledge, surgical experience, and neuronavigation.
    • Further larger comparative studies are warranted to confirm accuracy and generalizability.