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Published on: July 5, 2021
Pediatric endonasal dacryocystorhinostomy and operative standardization
D-T Nguyen1, B Fayet1, E Racy2
1Service d'ophtalmologie, hôpital universitaire, Necker-Enfants-Malades, AP-HP, 149, rue de Sèvres, 75015 Paris, France; Université Paris V René Descartes, 12, rue de l'École-de-Médecine, 75006 Paris, France.
Objective:
The objective of this study was to confirm that the standardized endonasal dacryocystorhinostomy (DCR) technique routinely performed in adults can be used in children.
Materials And Methods:
A consecutive series of children undergoing endonasal DCR between 2003 and 2017 was analysed. The surgical procedure consisted of: preoperative CT scan, anatomical localization of the ideal surgical zone, access to the nasal cavity via an optional planned enlargement, creation of a mucoperiosteal flap, osteotomy with rongeurs and equatorial resection of the medial wall of the lacrimal sac. This pediatric series was compared to a series of adult patients operated according to the same standardized technique.
Results:
A total of 20 DCRs (17 patients, with a mean age of 8 years (range: 4-16)) were included. Anatomical localization was effective in 100% of cases without the need for transillumination. With a mean follow-up of 4 years, the success rate was 95%, and no major complications were observed. Comparison with the same surgical technique in adults revealed similar results.
Discussion:
Our experience suggests that standardized endonasal DCR can be adapted to the nasal cavities of children. Anatomical localization is effective. The physiologically narrow nasal cavity does not constitute a major obstacle with the use of slightly smaller instruments. The results and complications are similar to those observed in adults.
Conclusion:
The same standardized endoscopic endonasal DCR surgical technique can be used in adults and children with a similar good success rate.
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A vector multiplied by a scalar value is called scalar multiplication. The result obtained is a new vector with a different magnitude. If the scalar is positive, the direction of the vector remains the same, but if it is negative, the direction of the vector is reversed. For example, the product of the mass and velocity yields the momentum.

