Abstract
Purpose
To evaluate the clinical usefulness of the dacryoscintigraphy in patients with nasolacrimal duct obstruction prior to endoscopic dacryocystorhinostomy.
Methods
One hundred thirty-five lacrimal views of endoscopic dacryocystorhinostomy (DCR) with a single surgeon for primary nasolacrimal duct obstruction (PANDO) were included. These were assigned into three groups according to the type of dacryoscintigraphy. Group 1 was a pre-sac obstruction pattern. Group 2 was an intra-sac obstruction pattern. Group 3 was post-sac obstruction pattern. Each group was evaluated for an anatomical and functional surgical success, presence of complications including granuloma, synechiae, and tube-induced inflammation at least 12 months after the surgery.
Results
Both anatomical and functional success rate showed no significant difference among the three groups (P = .297 and .472 linear by linear association). Functional failure rate (functional failure/total failure) also showed no clinically significant differences between groups. Logistic regression analysis was performed to determine the factors associated with functional success. There were no statistically significant factors in age, sex, scintigraphy type, pre-operative endoscopic grade, post-operative granuloma, and synechiae.
Conclusion
In patients with nasolacrimal duct obstruction, preoperative evaluation of obstruction level using dacryoscintigraphy may be not useful for predicting the functional success of the endoscopic dacryocystorhinostomy.
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Data availability
All data are available upon request to the corresponding author at mdjacob@naver.com
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Funding
This study was funded by the Dongguk University Research Fund (grant no. S-2014-G0001-00024).
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DJK and MC were responsible for the conception and design of the study. DJK acquired the data. DJK and MC analyzed and interpreted the data. DJK and MC wrote the draft. SB and MC revised the manuscript critically. All authors have read and approved the final manuscript.
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All procedures performed in study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Specifically, this study was approved by the Institutional Review Board of Dongguk University, Ilsan Hospital, Goyang, South Korea (IRB 2018-04-020).
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Author MC has received research grants from Dongguk University Research Fund. But, the funding organization had no role in the design or conduct of this research. Author DJK declares that he has no conflict of interest. Author SB declares that he has no conflict of interest.
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Kim, D.J., Baek, S. & Chang, M. Usefulness of the dacryoscintigraphy in patients with nasolacrimal duct obstruction prior to endoscopic dacryocystorhinostomy. Graefes Arch Clin Exp Ophthalmol 257, 1535–1540 (2019). https://doi.org/10.1007/s00417-019-04303-4
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DOI: https://doi.org/10.1007/s00417-019-04303-4