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Nasolacrimal polyurethane stent: complications with CT correlation
1Department of Radiology, Hospital Universitario de Getafe, Madrid, Spain.
Cardiovascular and Interventional Radiology
|December 16, 1998
Summary
Polyurethane stents effectively treat epiphora from nasolacrimal duct obstruction. While placement challenges can occur, this method is generally safe and well-tolerated, offering significant relief for patients.
Area of Science:
- Ophthalmology
- Otorhinolaryngology
Background:
- Epiphora, or excessive tearing, often results from nasolacrimal duct obstruction.
- Accurate visualization of the nasolacrimal drainage system is crucial for effective treatment planning.
Purpose of the Study:
- To assess the initial outcomes of polyurethane stent placement for epiphora due to nasolacrimal duct obstruction.
- To identify and discuss technical challenges and complications associated with the procedure.
- To utilize computed tomography (CT) for anatomical visualization of the drainage apparatus.
Main Methods:
- Nineteen patients with grade 3-4 epiphora underwent polyurethane Song stent insertion under fluoroscopic guidance.
- Dacryocystography was performed prior to stent placement.
- Computed tomography (CT) scans were obtained post-stent placement for all patients.
Main Results:
- Technical difficulties included guidewire misplacement (3 cases) and improper stent positioning (2 cases).
- Epiphora resolved completely in 13 patients and partially in 4; 3 stents became obstructed.
- Minor complications included transient epistaxis (7 patients) and headache (1 patient).
Conclusions:
- Polyurethane stent placement is a well-tolerated technique for treating epiphora with a high success rate.
- Awareness of potential placement difficulties is essential to prevent incorrect stent positioning.
- The procedure has a favorable safety profile with no major adverse events reported.