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A prospective, non-randomized, single-center clinical study was performed, and the patients underwent endoscopy-guided CC-BDCP using percutaneous transluminal coronary angioplasty (PTCA) balloon catheters. 25 patients were enrolled in the study. The CC-BDCP procedure was performed in 21 of 25 (84%) patients, and the remaining 4 (16%) patients had significant procedural difficulties due to unfavorable anatomical conditions. Of the 21 patients, 10 (47.6%) were procedurally assessed as \u201ceasy\u201d (eCC-BDCP) and in 11 (52.4%) as procedurally \u201cdifficult\u201d (dCC-BDCP). Values on Munk's epiphora intensity scale changed overall from 4.0 preoperatively to 1.4\u2009\u00b1\u20091.6 (<jats:italic>p<\/jats:italic>\u2009=\u20090.00001) postoperatively overall. FDDT changed overall from 2.9\u2009\u00b1\u20090.3 to 1.1\u2009\u00b1\u20091.2 after treatment (<jats:italic>p<\/jats:italic>\u2009=\u20090.00008) (from 2.8\u2009\u00b1\u20090.4 to 0.3\u2009\u00b1\u20090.6 in the eCC-BDCP group and from 2.9\u2009\u00b1\u20090.3 to 1.4\u2009\u00b1\u20091.2 in the dCC-BDCP group (<jats:italic>p<\/jats:italic>\u2009=\u20090.01352). The anatomical and functional success rate was 77% overall, 90% in the eCC-BDCP group, and 64% in the dCC-BDCP group. The CC-BDCP led to a statistically significant decrease in epiphora in a particular group of adult patients with demonstrable focal stenosis of the NLD.<\/jats:p>","DOI":"10.1038\/s41598-024-66354-w","type":"journal-article","created":{"date-parts":[[2024,9,30]],"date-time":"2024-09-30T11:02:00Z","timestamp":1727694120000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Management of adult focal nasolacrimal duct stenosis: long-term outcomes of 3D CT-DCG-assisted and endoscopically guided coronary catheter balloon dacryoplasty"],"prefix":"10.1038","volume":"14","author":[{"given":"Izabela","family":"Nowak-Gospodarowicz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafa\u0142","family":"Nowak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michal","family":"Kinasz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aleksandra Kinga","family":"Kicinska","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marek","family":"R\u0119kas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammad Javed","family":"Ali","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,9,30]]},"reference":[{"key":"66354_CR1","first-page":"649","volume":"105","author":"JJ Woog","year":"2007","unstructured":"Woog, J. 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