{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,8]],"date-time":"2026-02-08T08:53:46Z","timestamp":1770540826519,"version":"3.49.0"},"reference-count":23,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,6,17]],"date-time":"2024-06-17T00:00:00Z","timestamp":1718582400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicina"],"abstract":"<jats:p>Background: Few original articles describe the perioperative outcomes of uniportal thoracoscopic segmentectomy using a unidirectional dissection approach. In this retrospective study, we evaluated the feasibility and safety of this procedure. Methods: This study included 119 patients who underwent uniportal thoracoscopic segmentectomy in our department between February 2019 and December 2022. The patients were divided into unidirectional (group U, n = 28) and conventional (group C, n = 91) dissection approach groups. While the dominant pulmonary vessels and bronchi were transected at the hilum without dissecting a fissure in the unidirectional (U) group, the dominant pulmonary artery was exposed and divided at a fissure in the conventional (C) group. Patient characteristics and perioperative outcomes were compared between groups U and C. Results: The proportions of simple and complex segmentectomies were statistically similar between the groups. The operating time was shorter (group U: 110 [interqurtile range: 90\u2013140] min, group C: 135 [interqurtile range: 105\u2013166] min, p = 0.012) and there was less blood loss (group U: 0 [interqurtile range: 0\u20130] g, group C: 0 [interqurtile range: 0\u201350] g, p = 0.003) in group U than in group C. However, there were no significant intergroup differences in other perioperative outcomes. Conclusions: The unidirectional dissection approach in uniportal thoracoscopic pulmonary segmentectomy is safe and feasible and enables a smoother operation.<\/jats:p>","DOI":"10.3390\/medicina60060994","type":"journal-article","created":{"date-parts":[[2024,6,17]],"date-time":"2024-06-17T12:48:40Z","timestamp":1718628520000},"page":"994","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Feasibility and Safety of Uniportal Thoracoscopic Segmentectomy Using a Unidirectional Dissection Approach without Dissecting a Fissure"],"prefix":"10.3390","volume":"60","author":[{"given":"Hitoshi","family":"Igai","sequence":"first","affiliation":[{"name":"Department of General Thoracic Surgery, Japanese Red Cross Maebashi Hospital, 389-1 Asakura-cho, Maebashi 371-0811, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuhiro","family":"Kamiyoshihara","sequence":"additional","affiliation":[{"name":"Department of General Thoracic Surgery, Japanese Red Cross Maebashi Hospital, 389-1 Asakura-cho, Maebashi 371-0811, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuki","family":"Numajiri","sequence":"additional","affiliation":[{"name":"Department of General Thoracic Surgery, Japanese Red Cross Maebashi Hospital, 389-1 Asakura-cho, Maebashi 371-0811, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fumi","family":"Ohsawa","sequence":"additional","affiliation":[{"name":"Department of General Thoracic Surgery, Japanese Red Cross Maebashi Hospital, 389-1 Asakura-cho, Maebashi 371-0811, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8023-2570","authenticated-orcid":false,"given":"Kazuhito","family":"Nii","sequence":"additional","affiliation":[{"name":"Department of General Thoracic Surgery, Japanese Red Cross Maebashi Hospital, 389-1 Asakura-cho, Maebashi 371-0811, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1607","DOI":"10.1016\/S0140-6736(21)02333-3","article-title":"Segmentectomy versus lobectomy in small-sized peripheral non-small-cell lung cancer (JCOG0802\/WJOG4607L): A multicentre, open-label, phase 3, randomised, controlled, non-inferiority trial","volume":"399","author":"Saji","year":"2022","journal-title":"Lancet"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1056\/NEJMoa2212083","article-title":"Lobar or sublobar resection for peripheral stage IA non-small-cell lung cancer","volume":"388","author":"Altorki","year":"2023","journal-title":"N. Engl. J. Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1152","DOI":"10.21037\/tlcr-23-197","article-title":"Uniportal video-assisted thoracic surgery segmentectomy: A promising new development for thoracic surgery","volume":"12","author":"Forster","year":"2023","journal-title":"Transl. Lung Cancer Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"3001","DOI":"10.21037\/jtd-21-292","article-title":"Safety and feasibility of uniportal video-assisted thoracoscopic uncommon segmentectomy","volume":"13","author":"Matsuura","year":"2021","journal-title":"J. Thorac. Dis."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1093\/ejcts\/ezaa372","article-title":"Uniportal versus multiportal video-assisted thoracoscopic surgery does not compromise the outcome of segmentectomy","volume":"59","author":"Xie","year":"2021","journal-title":"Eur. J. Cardiothorac. Surg."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"335","DOI":"10.21037\/jtd-22-780","article-title":"Uniportal vs. multiportal thoracoscopic segmentectomy: A north American study","volume":"15","author":"Menier","year":"2023","journal-title":"J. Thorac. Dis."},{"key":"ref_7","first-page":"21","article-title":"Uniportal thoracoscopic right anterior basal (S8) segmentectomy using unidirectional dissection","volume":"2021","author":"Igai","year":"2021","journal-title":"Multimed. Man. Cardiothorac. Surg."},{"key":"ref_8","first-page":"51","article-title":"Uniportal thoracoscopic apical (S1) segmentectomy of the right upper lobe via an anterior approach","volume":"2021","author":"Igai","year":"2021","journal-title":"Multimed. Man. Cardiothorac. Surg."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3691","DOI":"10.21037\/jtd.2016.12.58","article-title":"The efficacy of thoracoscopic fissureless lobectomy in patients with dense fissures","volume":"8","author":"Igai","year":"2016","journal-title":"J. Thorac. Dis."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1007","DOI":"10.1016\/j.jtcvs.2009.07.023","article-title":"Decreasing the incidence of prolonged air leak after right upper lobectomy with the anterior fissureless technique","volume":"139","author":"Ng","year":"2010","journal-title":"J. Thorac. Cardiovasc. Surg."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1016\/j.ejcts.2006.11.030","article-title":"The approach of fused fissures with fissureless technique decreases the incidence of persistent air leak after lobectomy","volume":"31","author":"Calvo","year":"2007","journal-title":"Eur. J. Cardiothorac. Surg."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1093\/ejcts\/ezv455","article-title":"Fissureless fissure-last video-assisted thoracoscopic lobectomy for all lung lobes: A better alternative to decrease the incidence of prolonged air leak?","volume":"50","author":"Stamenovic","year":"2016","journal-title":"Eur. J. Cardiothorac. Surg."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1516","DOI":"10.1016\/j.surg.2022.05.027","article-title":"Uniportal video-assisted thoracic S9+10 segmentectomy using a single-direction approach is good for pulmonary function","volume":"172","author":"Wang","year":"2022","journal-title":"Surgery"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1586","DOI":"10.1016\/j.jtcvs.2020.01.028","article-title":"Single-direction thoracoscopic basal segmentectomy","volume":"160","author":"Liu","year":"2020","journal-title":"J. Thorac. Cardiovasc. Surg."},{"key":"ref_15","first-page":"1","article-title":"Uniportal video-assisted thoracoscopic surgery for anatomical fissureless anterior segment resection (S3) of the right upper lobe followed by lymph node dissection","volume":"2018","author":"Stamenovic","year":"2018","journal-title":"Multimed. Man. Cardiothorac. Surg."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"895","DOI":"10.1016\/j.jtcvs.2019.03.090","article-title":"Comparison of pulmonary segmentectomy and lobectomy: Safety results of a randomized trial","volume":"158","author":"Suzuki","year":"2019","journal-title":"J. Thorac. Cardiovasc. Surg."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"374","DOI":"10.1016\/j.ejcts.2009.03.038","article-title":"Total thoracoscopic pulmonary segmentectomy","volume":"36","author":"Oizumi","year":"2009","journal-title":"Eur. J. Cardiothorac. Surg."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"ivac064","DOI":"10.1093\/icvts\/ivac064","article-title":"Novel thoracoscopic segmentectomy combining preoperative three-dimensional image simulation and intravenous administration of indocyanine green","volume":"35","author":"Matsuura","year":"2022","journal-title":"Interact. Cardiovasc. Thorac. Surg."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1443","DOI":"10.1093\/ejcts\/ezab563","article-title":"Infrared thoracoscopic pulmonary segmentectomy with intravenous indocyanine green administration using preoperative simulation","volume":"61","author":"Igai","year":"2022","journal-title":"Eur. J. Cardiothorac. Surg."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"752","DOI":"10.1016\/j.jtcvs.2010.07.020","article-title":"New clinically applicable method for visualizing adjacent lung segments using an infrared thoracoscopy system","volume":"140","author":"Misaki","year":"2010","journal-title":"J. Thorac. Cardiovasc. Surg."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Igai, H., Matsuura, N., Numajiri, K., Ohsawa, F., and Kamiyoshihara, M. (2023). Early chest drain removal on the day of uniportal thoracoscopic segmentectomy. Gen. Thorac. Cardiovasc. Surg., epub ahead of print.","DOI":"10.1007\/s11748-023-01951-6"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1097\/SLA.0b013e3181b6dcab","article-title":"Severity grading of surgical complications","volume":"250","author":"Clavien","year":"2009","journal-title":"Ann. Surg."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"ezad224","DOI":"10.1093\/ejcts\/ezad224","article-title":"European Society of Thoracic Surgeons expert consensus recommendations on technical standards of segmentectomy for primary lung cancer","volume":"63","author":"Brunelli","year":"2023","journal-title":"Eur. J. Cardiothorac. Surg."}],"container-title":["Medicina"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1648-9144\/60\/6\/994\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T15:00:10Z","timestamp":1760108410000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1648-9144\/60\/6\/994"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,6,17]]},"references-count":23,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2024,6]]}},"alternative-id":["medicina60060994"],"URL":"https:\/\/doi.org\/10.3390\/medicina60060994","relation":{},"ISSN":["1648-9144"],"issn-type":[{"value":"1648-9144","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,6,17]]}}}