{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,24]],"date-time":"2026-02-24T07:47:45Z","timestamp":1771919265132,"version":"3.50.1"},"reference-count":17,"publisher":"S. Karger AG","issue":"3","license":[{"start":{"date-parts":[[2021,7,23]],"date-time":"2021-07-23T00:00:00Z","timestamp":1626998400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2021,7,23]],"date-time":"2021-07-23T00:00:00Z","timestamp":1626998400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ORL"],"published-print":{"date-parts":[[2022]]},"abstract":"<b><i>Introduction:<\/i><\/b> Endoscopic dacryocystorhinostomy (DCR) is the treatment of choice for patients with lacrimal drainage system obstruction. Dacryocystography (DCG) is one of the most common preoperative studies and considered as a useful test demonstrating the anatomy of lacrimal drainage systems. <b><i>Objective:<\/i><\/b> This study was designed to evaluate the diagnostic efficacy of DCG for canalicular obstruction and to compare surgical outcomes between true-obstruction versus pseudo-obstruction diagnosed with DCG. <b><i>Methods:<\/i><\/b> A retrospective study was performed on 45 consecutive patients with lacrimal canalicular obstruction who had underwent endoscopic DCR with silicone tube insertion from January 2009 to December 2014 at a single tertiary hospital. A review of medical records included demographic data, preoperative symptoms and signs, results of intraoperative canalicular probing, and surgical outcomes including the postoperative symptom improvement and endoscopic finding. <b><i>Results:<\/i><\/b> Of 45 patients, 34 patients (75.6%) had true-canalicular obstructions and 11 patients (24.4%) had pseudo-canalicular obstructions. The success rate of endoscopic DCR was 50% (17 of 34) in cases with true-canalicular obstruction while 90.9% (10 of 11) in pseudo-canalicular obstruction (<i>p<\/i> value &#x3c;0.05). No intraoperative or postoperative complications including sinusitis or synechia were found. <b><i>Conclusions:<\/i><\/b> About a quarter of lacrimal canalicular obstruction cases diagnosed with DCG seem to be pseudo-obstruction. The success rate of endoscopic DCR in pseudo-canalicular obstruction is similar to that of saccal and nasolacrimal ductal obstruction. <\/jats:p>","DOI":"10.1159\/000517485","type":"journal-article","created":{"date-parts":[[2021,7,23]],"date-time":"2021-07-23T21:00:37Z","timestamp":1627074037000},"page":"200-204","source":"Crossref","is-referenced-by-count":1,"title":["Possibility of Pseudo-Obstruction in Lacrimal Canalicular Obstruction Diagnosed with Dacryocystography"],"prefix":"10.1159","volume":"84","author":[{"given":"Woo Sub","family":"Shim","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min Jai","family":"Cho","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Young","family":"Kang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seok Hee","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joo-Yeon","family":"Lee","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hahn Jin","family":"Jung","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"127","published-online":{"date-parts":[[2021,7,23]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1288\/00005537-199403000-00005"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1017\/s0022215100139325"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-199602000-00015"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1002\/lary.20916"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.21053\/ceo.2017.01781"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.21053\/ceo.2018.00031"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.56.8.600"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.86.7.792"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1016\/s0161-6420(86)33779-5"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9394(65)93004-7"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1016\/s0002-9394(14)70070-4"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajo.2003.08.002"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1016\/S0161-6420(99)90535-3"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.4103\/0301-4738.37593"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1016\/s0009-9260(05)81783-0"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1001\/archopht.1972.01000030525010"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1007\/s00417-004-1038-0"}],"container-title":["ORL"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/517485","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.karger.com\/Article\/Pdf\/517485","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,23]],"date-time":"2025-04-23T15:05:35Z","timestamp":1745420735000},"score":1,"resource":{"primary":{"URL":"https:\/\/karger.com\/article\/doi\/10.1159\/000517485"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7,23]]},"references-count":17,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2022,5,23]]},"published-print":{"date-parts":[[2022,5,31]]}},"URL":"https:\/\/doi.org\/10.1159\/000517485","archive":["Portico"],"relation":{},"ISSN":["0301-1569","1423-0275"],"issn-type":[{"value":"0301-1569","type":"print"},{"value":"1423-0275","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,7,23]]}}}