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Patients were grouped according to the extent of TLC: Group I (<jats:italic>n<\/jats:italic>\u2009=\u200911, 61.1%): unilateral subepithelial or subligamental cordectomy; Group II (<jats:italic>n<\/jats:italic>\u2009=\u20097, 38.9%): unilateral transmuscular, total, or extended cordectomy. Voice quality parameters, including dysphonia grade (G), roughness (R), breathiness (B), maximal phonation time (MPT), jitter, and shimmer, were evaluated before, and at 6\u00a0weeks and 6\u00a0months after the TLC.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>In Group I, the degree of G and R items remained without substantial improvement 6\u00a0weeks after surgery; however, improved above the pre-surgery level up to 6\u00a0months after surgery. The MPT, jitter, and shimmer did not change significantly at 6\u00a0weeks or 6\u00a0months post-TLC. In Group II, G, R, and B remained significantly impaired even 6\u00a0months post-surgery. Jitter, and shimmer worsened at 6\u00a0weeks, but reached preoperative levels at 6\u00a0months post-surgery. MPT was significantly worse at 6\u00a0weeks and remained deteriorated at 6\u00a0months post-surgery. All measured parameters were significantly worse in Group II than in Group I at 6\u00a0weeks and 6\u00a0months post-surgery. No patient required a phonosurgical procedure.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>After a TLC, voice quality evolution depended on the extent of surgery. It did not improve at 6\u00a0weeks post-surgery. Improvements in less extent cordectomies occurred between 6\u00a0weeks and 6\u00a0months post-surgery. Understanding voice development over time is important for counseling patients when considering phonosurgical procedures.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00405-021-06751-3","type":"journal-article","created":{"date-parts":[[2021,3,18]],"date-time":"2021-03-18T21:44:51Z","timestamp":1616103891000},"page":"2899-2906","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Evolution of voice after transoral laser cordectomy for precancerous lesions and early glottic cancer"],"prefix":"10.1007","volume":"278","author":[{"given":"Lucia","family":"Stan\u00edkov\u00e1","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1349-9958","authenticated-orcid":false,"given":"Karol","family":"Zelen\u00edk","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Form\u00e1nek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jana","family":"Seko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Radana","family":"Walderov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter","family":"K\u00e1ntor","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pavel","family":"Kom\u00ednek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,3,18]]},"reference":[{"key":"6751_CR1","doi-asserted-by":"publisher","first-page":"142","DOI":"10.1177\/000348949210100207","volume":"101","author":"WF McGuirt","year":"1992","unstructured":"McGuirt WF, Blalock D, Koufman JA, Feehs RS (1992) Voice analysis of patients with endoscopically treated early laryngeal carcinoma. 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No benefits in any form have been received or will be received from a commercial party related directly or indirectly to the subject of this article.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in this study were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki Declaration and its later amendments.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was obtained from all individual participants included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}