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Related Experiment Video

Updated: Feb 25, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
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Endoscopic DCR using bipedicled interlacing mucosal flaps.

Sarina K Mueller1,2, Suzanne K Freitag3, Daniel R Lefebvre3

  • 1Department of Otolaryngology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, U.S.A.

The Laryngoscope
|August 9, 2017
PubMed
Summary
This summary is machine-generated.

A new endoscopic dacryocystorhinostomy (DCR) technique uses interlacing mucosal flaps to improve nasolacrimal duct (NLD) identification and patency. This method offers a safe and effective approach for treating NLD obstruction with high success rates.

Keywords:
Allergy/RhinologyBasic ScienceClinical

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Area of Science:

  • Otolaryngology
  • Ophthalmology
  • Surgical Innovation

Background:

  • Nasolacrimal duct (NLD) obstruction is common, affecting all demographics.
  • Dacryocystorhinostomy (DCR) is the standard surgical treatment for complete NLD obstruction and dacryocystitis.
  • Endoscopic DCR (eDCR) offers a minimally invasive approach.

Purpose of the Study:

  • To introduce and describe a novel bipedicled interlacing mucosal sparing flap technique for eDCR.
  • To evaluate the safety and efficacy of this new eDCR technique.

Main Methods:

  • A bipedicled mucosal flap technique was developed for eDCR.
  • This involves a posterior flap and a novel anterior flap over the NLD's intraosseous segment.
  • The flaps are repositioned post-procedure to minimize bone exposure.

Main Results:

  • The technique was used in 55 procedures.
  • Achieved 100% identification of the NLD and lacrimal sac.
  • Reported 0% complication rate, 100% anatomical patency, and 96.4% success rate after 6 months.

Conclusions:

  • The bipedicled interlacing flap technique for eDCR ensures safe and reproducible identification of the NLD and lacrimal sac.
  • This method minimizes bone exposure and reduces the restenosis rate.
  • It represents an effective advancement in endoscopic DCR procedures.