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Title: Nasolacrimal Stenting: Toward Improving Outcomes with a Simple Modification of the Song Stent

The purpose of this study was to evaluate, in a prospective, single-center study, the effectiveness of Song's polyurethane stents, modified 'in-house,' in the percutaneous management of epiphora. Patients (n = 170; age range 18-83, mean = 64; 50 male, 120 female) with severe epiphora had the modified stents inserted (183 eyes/195 stents) to treat unilateral/bilateral and complete/partial obstruction of the nasolacrimal system. The etiology of the obstruction was idiopathic in 119 cases (61%) and chronic dacryocystitis in 76 (39%). The set designed by Song was used in all patients but modified by us such that the extreme end is cone-shaped. The original technique was slightly modified by us and the procedure was conducted on an outpatient basis. The initial technical success rate of stent placement was 97%. Resolution of epiphora was complete in 180 eyes and partial in 3. On follow-up (mean = 18 months; range: 2 days to 24 months), 165 of 195 stents (85%) remained patent. Primary patency rates at follow-up were 86%, 84%, 84%, and 79% in the first 6 months, second and third 6 months, and the present (24 months), respectively. Stents became obstructed in 30 patients, but all but 2 were easily withdrawn and 20more » of these patients remained asymptomatic for a mean of 14 months (secondary patency of 67%). Following stent removal, the withdrawn stent was replaced with a new stent in the same intervention on 14 occasions. In another six cases, patency was re-established without the need of a second stent. The procedure is simple and safe, both in stent insertion as well as in mechanical de-blocking and withdrawal when occluded. Success was >80 % in the short term (1-year follow-up). Stenting failure does not preclude other treatment because with the modification that we had introduced, the extreme end of the stent becomes more accessible to mechanical de-blocking, withdrawal, and relocation. The levels of primary and secondary patencies are promising and warrant more extensive investigation.« less
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [5]
  1. Hospital Virgen de la Salud, Unit of Interventional Radiology (Spain), E-mail:
  2. Hospital Virgen de la Salud, Ophthalmology Service (Spain)
  3. Hospital Virgen de la Salud, Otorhinolaringology Service (Spain)
  4. Hospital Virgen de la Salud, Anatomy-Pathology Service (Spain)
  5. Hospital Virgen de la Salud, Unit of Interventional Radiology (Spain)
Publication Date:
OSTI Identifier:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cardiovascular and Interventional Radiology; Journal Volume: 29; Journal Issue: 4; Other Information: DOI: 10.1007/s00270-004-0297-9; Copyright (c) 2006 Springer Science+Business Media, Inc.;; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States