Korean J Ophthalmol.  2005 Dec;19(4):252-257. 10.3341/kjo.2005.19.4.252.

Clinicopathologic Findings after Nasolacrimal Polyurethane Stent Implantations

• Lee JH
• Kang MS
• Yang JW

• KMID: 754435
• DOI: http://doi.org/10.3341/kjo.2005.19.4.252

Abstract

PURPOSE
To evaluate the results of nasolacrimal polyurethane stent implantations for the treatment of primary acquired nasolacrimal duct obstruction, and to determine the effects of various surgical procedures, including stent removal, in subsequent nasolacrimal duct obstruction. METHODS: This study included 15 patients who had nasolacrimal polyurethane implantations for the treatment of primary acquired nasolacrimal duct obstruction. Occluded stents were removed either by nasal endoscopy or during dacryocystorhinostomy (DCR). Cultures and biopsies were performed on the removed stents, and the results of the secondary DCR were analyzed for a 6-month follow-up period. RESULTS: During stent removal surgery, various degrees of chronic inflammatory reaction and fibrous tissue formation were detected in the lacrimal sac and nasolacrimal duct. Formations of granuloma and fibrous tissue were found in 15 eyes, and culture-positive reaction were found in nine of the 15 eyes. Conventional dacryocystorhinostomy surgery was performed in nine of the 15 eyes and a silicone tube was located at the canaliculi. Subjective and objective outcome were favorable in 13 of the 15 eyes. CONCLUSIONS: The success rate of nasolacrimal polyurethane stent implantation for the treatment of primary acquired nasolacrimal duct obstruction is low. This may result from a chronic inflammatroy reaction. Despite the low success rate of nasolacrimal polyurethane stent implantation, the success rate of endonasal DCR as a subsequent surgery is favorable.

Keyword

Endonasal DCR; Monocanalicular stenting; Nasolacrimal duct obstruction; Nasolacrimal polyurethane stent; Silicone tube intubation

MeSH Terms

Treatment Outcome
*Stents
Retrospective Studies
Recurrence
Prosthesis Implantation/*instrumentation
*Polyurethanes
Middle Aged
Male
Lacrimal Duct Obstruction/*pathology/surgery
Humans
Follow-Up Studies
Female
Device Removal
Dacryocystorhinostomy/*methods
Aged
Adult

Figure

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  Fig. 1 Inflammation (a. arrow) and granulation tissue (b. arrow) in Polyurethane nasolacrimal stent lumen were detected.

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  Fig. 2 Dense infiltration of lymphoplasma cells (arrow) observed beneath the detached epithelium (H&E, ×100)

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  Fig. 3 Inflammatory cells (arrow) infiltrating between the submucosal glands of the nasolacrimal sac. (H&E, ×200)

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