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Updated: May 17, 2026
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Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Computed tomographic dacryocystography in children undergoing balloon dacryoplasty
Roberto M Limongi1, Leopoldo Magacho, Suzana Matayoshi
1Ophthalmology Reference Center at the Hospital das Clínicas of the Federal University of Goiás, Goiás, Brazil. rmurillousp@hotmail.com
Summary
Contrast-enhanced CT-DCG can predict success in children with congenital nasolacrimal obstruction. A decrease in contrast volume after balloon dilation indicates success, while a larger lacrimal sac size suggests failure.
Area of Science:
- Ophthalmology
- Pediatric Imaging
- Medical Imaging
Background:
- Congenital nasolacrimal duct obstruction (CNLDO) is common in children.
- Balloon dacryoplasty is a treatment option for CNLDO.
- Predicting clinical success after intervention is crucial for patient management.
Purpose of the Study:
- To evaluate if lacrimal sac and nasolacrimal duct measurements by contrast-enhanced computed tomographic dacryocystography (CT-DCG) can predict clinical success in children with CNLDO post-balloon dacryoplasty.
- To assess the correlation between pre- and post-procedure CT-DCG findings and clinical outcomes.
Main Methods:
- Children aged 2-6 years with CNLDO underwent contrast-enhanced CT-DCG before and after balloon dilation.
- Measurements included lacrimal sac circumference and contrast volume within the nasolacrimal duct and sac.
- Clinical success was defined as the resolution of epiphora.
Main Results:
- A total of 18 nasolacrimal ducts from 13 children were analyzed.
- A decrease in contrast volume post-dilation was significantly associated with clinical success (P=0.04).
- A larger lacrimal sac size was associated with clinical failure (P=0.01).
Conclusions:
- Contrast-enhanced CT-DCG is valuable for assessing nasolacrimal anatomy in pediatric CNLDO.
- Reduced post-dilation contrast volume predicts successful balloon dilation outcomes.
- Increased lacrimal sac size may indicate a poorer prognosis after intervention.
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