In children with congenital nasolacrimal canal dysplasia, the combination of endoscopic dacryocystorhinostomy and lacrimal CT scan may be advantageous over traditional solutions, according to retrospective study.
All 50 eyes of 49 children aged 2 to 14 years with congenital nasolacrimal duct obstruction and lacrimal bony dysplasia who underwent endoscopic dacryocystorhinostomy (EN-DCR) at Beijing Children’s Hospital were deemed to be successfully cured or improved.
Patients who experienced lacrimal sac pore formation in the lateral nasal wall in front of the middle concha, epithelization under endoscopic observation, no tearing or pus, fluorescein dye disappearance test (FDDT) of 0 and smooth flush were considered cured. Improvement was considered when the patient had lacrimal sac pore formation in the lateral nasal wall in front of the concha, epithelization under endoscopic observation, symptom relief, FDDT of 1 and flush unobstructed or pressure flush unobstructed.
Cure rate was 41/50 (82%) with 9/50 (18%) showing improvement, making the procedure 100% successful for cure or improvement.
The CT scan “can precisely delineate the shape, direction, and abnormal structure of the bony nasolacrimal duct and provide a clear anatomical characterization of the abnormal nasolacrimal canal,” the study authors wrote.
Because congenital nasolacrimal canal dysplasia is a type of congenital nasolacrimal duct obstruction that does not respond to conservative and conventional treatment, the use of the CT scan to identify the abnormality in conjunction with EN-DCR provides an advantage over traditional lacrimal surgery, the authors said. – by Rebecca L. Forand
Disclosure: The authors report no relevant financial disclosures.