[Treatment of nasolacrimal duct obstruction with Song's stent. Long term efficacy]. / Tratamiento de la obstrucción del conducto naso-lagrimal mediante prótesis de Song. Eficacia a largo plazo.

PURPOSE: To evaluate the long-term efficacy (5 years) of Song's stent in the treatment of naso-lachrymal duct obstruction. MATERIALS AND METHODS: We examined Song's stents installed in 64 eyes from 62 patients with naso-lachrymal duct obstruction (NLD). Of the 64, 48 were women and 14 men of mean age 60 SD 13.17 years. Obstructions of right side 62.5% and left side 37.5%, and location in dacriocystography: sac-NLD junction 82.8%, distant NLD 10.9%, medium NLD 3.1% and both proximal and complete NLD 1.6%. CLINICAL PRESENTATION: chronic epiphora 96.8%, acute dacriocystitis 67.2%, purulent discharge 25% and mucocele 17.2%. Mean follow-up period was 25.23 months. RESULTS: 13 stents were removed and 2 changed during the follow-up. 67.2% were patent at the end of the study; epiphora reduced to 32.8%, number of acute dacryocystitis, purulent discharge and mucocele to 1.6%. Subjective improvement was found in 73.5%. Surgical complications included epistaxis (15.6%) and pain (14.1%), and post-operative complications included reobstruction in 22 cases within a mean time of 8.6 months. CONCLUSIONS: Song's stent is a quick and useful option in treatment of epiphora. Despite not being efficient in all cases, it leads to improvement of symptoms and avoidance of surgery in the majority of cases. However, it requires periodical washes to maintain its patency.

Tratamiento de la obstrucción del conducto naso-lagrimal mediante prótesis de Song: Eficacia a largo plazo / Treatment of nasolacrimal duct obstruction with songs stent. Long term efficacy

Objetivo: Evaluar la eficacia a largo plazo (5 años) de la prótesis nasolagrimal de Song en el tratamiento de la obstrucción del conducto naso-lagrimal. Material y métodos: Se estudiaron 64 ojos (62 pacientes) con prótesis de Song por obstrucción del conducto naso-lagrimal (CNL), 48 mujeres y 14 hombres de edad media 60 años DE 13,17. El lado más frecuentemente obstruido fue el derecho (62,5%), siendo en el ojo izquierdo de 37,5%; y el tipo de obstrucción en la dacriocistografía: unión CNL-saco 82,8%, CNL distal 10,9%, CNL medio 3,1%, y proximal y completo, ambos del 1,6%. La clínica previa más frecuente fue la epífora (96,8%), dacriocistitis aguda (67,2%), conjuntivitis de repetición (25%) y mucocele (17,2%). El tiempo medio de seguimiento fue de 25,23 meses (máximo 53 y mínimo 2). Resultados: Durante el seguimiento se retiraron 13 prótesis y recambiaron 2. Al final siguen permeables 43 (67,2%); la epífora se redujo al 32,8% y el número de episodios de dacriocistitis aguda, conjuntivitis de repetición y mucocele se redujo al 1,6%. El 73,5% de los encuestados manifestaron una mejoría subjetiva. La complicación intraoperatoria más frecuente fue la epístaxis (15,6%) y dolor (14,1%), y de las post-operatorias la obstrucción en 22 casos, con un tiempo medio de 8,6 meses. Conclusiones: La prótesis de Song es una opción útil y rápida en el tratamiento de las obstrucciones del CNL. Pese a no ser eficaz en todos, produce una mejoría sintomática en la mayoría, permitiendo evitar la cirugía. No obstante, se requieren lavados periódicos para mantener su permeabilidad(AU)

Purpose: To evaluate the long-term efficacy (5 years) of Songs stent in the treatment of naso-lachrymal duct obstruction. Materials and methods: We examined Songs stents installed in 64 eyes from 62 patients with naso-lachrymal duct obstruction (NLD). Of the 64, 48 were women and 14 men of mean age 60 SD 13.17 years. Obstructions of right side 62.5% and left side 37.5%, and location in dacriocystography: sac-NLD junction 82.8%, distant NLD 10.9%, medium NLD 3.1% and both proximal and complete NLD 1.6%. Clinical presentation: chronic epiphora 96.8%, acute dacriocystitis 67.2%, purulent discharge 25% and mucocele 17.2%. Mean follow-up period was 25.23 months. Results: 13 stents were removed and 2 changed during the follow-up. 67.2% were patent at the end of the study; epiphora reduced to 32.8%, number of acute dacryocystitis, purulent discharge and mucocele to 1.6%. Subjective improvement was found in 73.5%. Surgical complications included epistaxis (15.6%) and pain (14.1%), and post-operative complications included reobstruction in 22 cases within a mean time of 8.6 months. Conclusions: Songs stent is a quick and useful option in treatment of epiphora. Despite not being efficient in all cases, it leads to improvement of symptoms and avoidance of surgery in the majority of cases. However, it requires periodical washes to maintain its patency(AU)