1
|
Rydell R, Andreasson J, Gustafsson Baldwin S, Clarhed N. Minimal invasive LASER-resection vs. radiotherapy as primary treatment of early glottic cancer. A population-based study with, up to 16 years follow up of survival, rate of laryngectomy and voice function. Acta Otolaryngol 2024; 144:58-64. [PMID: 38294703 DOI: 10.1080/00016489.2023.2299674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 12/21/2023] [Indexed: 02/01/2024]
Abstract
BACKGROUND Early glottic cancer can be treated with laser resection or radiotherapy. In an earlier study, we found that voice function after laser resection was inferior to that after radiotherapy. OBJECTIVES This study was designed to determine if reduced margins at laser resection improved voice function without impairing oncologic results. METHOD A total of 268 patients with previously untreated T1-T2 glottic carcinoma were studied. They were primarily treated with either radiotherapy (n = 119) or laser resection (n = 149). Survival, need for additional treatment (radiotherapy and/or total layngectomi) and voice function was compared. RESULT Median follow up time was 7 years with range 0.5-16.6. There was no difference in the overall survival (p = .065) or disease-specific survival. (p = .126). After radiotherapy 32/119 patients and after laser resection 57/149 patients had recurrence. Total rate of laryngectomy was 24% in the radiotherapy group, and 8% in the laser resection group (p = .001). Voice analysis (T1A) showed more roughness in the radiotherapy group, otherwise no difference. CONCLUSIONS By reducing the surgical margins, we have achieved a better voice function (T1A) but more patients have needed repeated laser excisions and some have also needed supplementary radiotherapy. The risk of laryngectomy and survival were apparently not affected.
Collapse
Affiliation(s)
- Roland Rydell
- Department of Clinical Sciences Lund, Otorhinolaryngology/Head and Neck Surgery, Lund University, Skane University Hospital, Lund, Sweden
- Department of Clinical Sciences Lund, Logopedics, Phoniatrics and Audiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Josefine Andreasson
- Department of Clinical Sciences Lund, Logopedics, Phoniatrics and Audiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Sara Gustafsson Baldwin
- Department of Clinical Sciences Lund, Logopedics, Phoniatrics and Audiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Nathalie Clarhed
- Department of Clinical Sciences Lund, Logopedics, Phoniatrics and Audiology, Lund University, Skane University Hospital, Lund, Sweden
| |
Collapse
|
2
|
Yin S, Huang H, Sun P, Zhang D. Analysis of prognostic factors for vocal fold leukoplakia based on 344 cases at a two-year follow up. J Laryngol Otol 2023; 137:1170-1175. [PMID: 37194075 DOI: 10.1017/s0022215123000762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
OBJECTIVE To evaluate risk factors for poor prognosis in vocal fold leukoplakia. METHODS Clinical data were collected for 344 patients with vocal fold leukoplakia who received surgical treatment in our otolaryngology department from October 2010 to June 2019. Univariate and multivariate logistic regression analyses of the relevant factors were conducted. RESULTS Among the 344 patients, 98 exhibited recurrence and 30 underwent a malignant change. Multivariate logistic regression analysis showed that size of the lesion (p = 0.03, odds ratio = 2.14), form of the lesion under white light (p < 0.001), surgical method (p < 0.001, odds ratio = 0.28) and pathological type (p < 0.001) were independent factors that affected the recurrence of vocal fold leukoplakia. In both univariate and multivariate analyses, the sole independent risk factor for malignant transformation of vocal fold leukoplakia was pathological type (p < 0.001). CONCLUSION The outlook for vocal fold leukoplakia depends on several clinical factors, especially pathological type. The more severe the pathological type, the more likely it is to recur or become cancerous.
Collapse
Affiliation(s)
- S Yin
- Department of Otolaryngology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - H Huang
- Department of Otolaryngology, First Affiliated Hospital of Soochow University, Suzhou, China
| | - P Sun
- Department of Otolaryngology, First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Head and Neck, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - D Zhang
- Department of Otolaryngology, First Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
3
|
Carreras A, Martínez-Torre MI, Zabaleta M, Sanchez-del-Rey A, Santaolalla F, Diaz-de-Cerio P. Prognosis and Outcomes in Early Stage Glottic Carcinoma Involving the Anterior Commissure Treated with Laser CO 2 Surgery: A Retrospective Observational Analysis. Indian J Otolaryngol Head Neck Surg 2022; 74:6048-6053. [PMID: 36742721 PMCID: PMC9895331 DOI: 10.1007/s12070-021-02698-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/20/2021] [Indexed: 02/07/2023] Open
Abstract
The anterior commissure (AC) is the area where the vocal cords attach to the thyroid cartilage through Broyles' ligament. Many authors argue that involvement of the anterior commissure in early stage glottic carcinoma (I, II) constitutes a risk factor for local recurrence. The objective of this study is to evaluate whether anterior commissure involvement in early stage glottis cancer is an independent risk factor for recurrence and mortality. The study included all those patients diagnosed with glottis carcinoma in stages I and II of the AJCC treated by transoral laser surgery at the Hospital San Pedro (Logroño, Spain) between 2005 and 2015. Patients were divided into two groups according to the presence (AC1) or absence (AC0) of involvement of the commissure. Of 29 patients treated, 44.8% were AC1. Patients with anterior commissure involvement had more local recurrence (p = 0.2701); higher mortality rate (p = 0.2256); lower disease-free survival (p = 0.0881) and a lower overall survival (p = 0.0331). The 5-year survival rate was 24.5% lower in patients with invasion of the anterior commissure. The involvement of the anterior commissure is an independent risk factor that should be considered in the prognosis of laryngeal cancer.
Collapse
Affiliation(s)
- A. Carreras
- Department of Otorhinolaryngology, Hospital Universitari Mútua Terrassa, Plaça del Doctor Robert 5, 08221 Terrassa, Barcelona Spain
| | - M. I. Martínez-Torre
- Department of Otorhinolaryngology Head and Neck Surgery, Hospital San Pedro, Logroño, La Rioja Spain
| | - M. Zabaleta
- Department of Otorhinolaryngology Head and Neck Surgery, Hospital San Pedro, Logroño, La Rioja Spain
| | - A. Sanchez-del-Rey
- Department of Dermatology, Ophthalmology and Otorhinolaryngology, College of Medicine, University of the Basque Country, Leioa, Bizkaia Spain
| | - F. Santaolalla
- Department of Dermatology, Ophthalmology and Otorhinolaryngology, College of Medicine, University of the Basque Country, Leioa, Bizkaia Spain
| | - P. Diaz-de-Cerio
- Department of Otorhinolaryngology Head and Neck Surgery, Hospital San Pedro, Logroño, La Rioja Spain
| |
Collapse
|
4
|
Colizza A, Ralli M, D'Elia C, Greco A, de Vincentiis M. Voice quality after transoral CO 2 laser microsurgery (TOLMS): systematic review of literature. Eur Arch Otorhinolaryngol 2022; 279:4247-4255. [PMID: 35505113 PMCID: PMC9363323 DOI: 10.1007/s00405-022-07418-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/20/2022] [Indexed: 11/29/2022]
Abstract
PURPOSE Transoral laser microsurgery (TOLMS) with carbon dioxide is a safe approach for laryngeal carcinoma. In literature there are three main methods for evaluating speech outcomes: acoustic and aerodynamics analysis, perceptual evaluation and patient-reported outcomes (PROs). The aim of this study was to systematically review the literature about the voice quality outcomes of TOLMS according to type of cordectomy. METHODS A systematic literature review was performed and all the results until December 2021 were extrapolated. We evaluated the acoustic and aerodynamics parameters (fundamental frequency, harmonics to noise ratio, jitter, shimmer and maximum phonation time), perceptual data (GRBAS scale) and patient-related outcomes (VHI scale). RESULTS 24 studies met the inclusion criteria for a total number of 1207 patients enrolled. The number for each type of cordectomy are: 287 type I (23.78%), 311 type II (25.78%), 328 type III (27.14%), 129 type 4 (10.69%) and 152 type V (12.60%). Patients are grouped according to the type of cordectomy in: limited cordectomy (type I and II) and extended cordectomy (types III-IV-V). The difference between two groups is statistically significative in terms of acoustic analysis, perceptual data and patient-related outcomes (p < 0.05). CONCLUSIONS Patients who underwent type I or II cordectomy have significantly better quality of voice in terms of VHI, perceptual voice quality evaluations and acoustic parameters compared to type III, IV and V cordectomies. The effect of TOLMS on the voice should depend from the extent of the resection and in particular from the scar of the vocal muscle.
Collapse
Affiliation(s)
- Andrea Colizza
- Department of Sense Organs, Sapienza University of Rome, Viale del Policlinico 155, 00186, Rome, Italy.
| | - Massimo Ralli
- Department of Sense Organs, Sapienza University of Rome, Viale del Policlinico 155, 00186, Rome, Italy
| | - Chiara D'Elia
- Otorhinolaryngology Unit, Policlinico Umberto I, Rome, Italy
| | - Antonio Greco
- Department of Sense Organs, Sapienza University of Rome, Viale del Policlinico 155, 00186, Rome, Italy
| | - Marco de Vincentiis
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
5
|
Sjogren E, Hendriksma M, Piazza C, Hartl DM, Suarez C, Cohen O, de Bree R, Quer M, Poorten VV, Rodrigo JP, Civantos F, Genden E, Kowalski LP, Makitie A, Shaha A, Takes RP, Sanabria A, Guntinas-Lichius O, Rinaldo A, Ferlito A. Voice Outcome After Carbon Dioxide Transoral Laser Microsurgery for Glottic Cancer According to the European Laryngological Society Classification of Cordectomy Types - A Systematic Review. J Voice 2022:S0892-1997(22)00069-8. [PMID: 35422356 DOI: 10.1016/j.jvoice.2022.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/06/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Voice outcome after carbon dioxide transoral laser microsurgery (CO2TOLMS) for glottic cancer is of prime importance. However, a comprehensive overview according to the European Laryngological Society (ELS) classification of cordectomies is still lacking. The aim of this systematic review is to summarize data on voice outcome associated with individual types of ELS glottic cordectomy after CO2TOLMS. MATERIALS AND METHODS A systematic review of the literature was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. The initial search identified 936 records of which 25 publications were then included. Voice outcome data (Voice Handicap Index [VHI] version 30, grade of dysphonia [G] and maximum phonation time [MPT]) were extracted per resection type. Weighted averages were calculated. RESULTS Data show a gradual increase in the VHI scores although they were still similar for all cordectomy types (range 14.2 to 21.5). The grade of dysphonia showed a gradual increase with increasing resection depth (range 1.0 to 1.9). There was a gradual decrease in the MPT (range 15.2 to 7.2). CONCLUSION Voice outcome is related to cordectomy type with mild dysphonia characterizing ELS type I, II and III cordectomies, while more extended cordectomies (ELS type IV, V and VI) result in moderate dysphonia and shortness of breath during phonation. The voice handicap experienced by patients is limited even in the more extended cordectomies.
Collapse
Affiliation(s)
- Elisabeth Sjogren
- Department of Otorhinolaryngology, Head and Neck Surgery, Leiden University Medical Center, Leiden, The Netherlands.
| | - Martine Hendriksma
- Department of Otorhinolaryngology, Head and Neck Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Cesare Piazza
- Department of Otorhinolaryngology- Head and Neck Surgery, ASST Spedali Civili of Brescia, University of Brescia, Brescia, Italy
| | - Dana M Hartl
- Department of Otolaryngology Head and Neck Surgery, Institut Gustave Roussy and University Paris-Sud, Villejuif Cedex, France
| | - Carlos Suarez
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Oded Cohen
- Department of Surgery, Division of Otolaryngology, Yale University School of Medicine, New Haven, Connecticut
| | - Remco de Bree
- Department of Head and Neck Surgical Oncology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Miquel Quer
- Department of Otorhinolaryngology and Head and Neck Surgery, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Vincent Vander Poorten
- Department of Oncology, Section Head and Neck Oncology, KU Leuven, Leuven, Belgium; Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven Cancer Institute, Leuven, Belgium
| | - Juan Pablo Rodrigo
- Department of Otolaryngology, Hospital Universitario Central de Asturias, IUOPA, University of Oviedo, Centro de Investigación Biomédica en Red de Cancer (CIBERONC), Oviedo, Spain
| | - Francisco Civantos
- Department of Otolaryngology-Head and Neck Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida
| | - Eric Genden
- Ear, Nose, Throat / Otolaryngology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Luiz P Kowalski
- Head and Neck Surgery and Otorhinolarynglology Department, A C Camargo Cancer Center, and Head and Neck Surgery Department, University of São Paulo Medical School
| | - Antti Makitie
- Department of Otorhinolaryngology - Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ashok Shaha
- Head and Neck Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Robert P Takes
- Department of Otolaryngology-Head and Neck Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Alvaro Sanabria
- Department of Surgery, School of Medicine, Universidad de Antioquia/Hospital Universitario San Vicente Fundación, Medellín, Colombia.; CEXCA Centro de Excelencia en Enfermedades de Cabeza y Cuello, Medellín, Colombia
| | - Orlando Guntinas-Lichius
- Department of Otorhinolaryngology, Institute of Phoniatry/Pedaudiology, Jena University Hospital, Jena, Germany
| | | | - Alfio Ferlito
- Coordinator of the International Head and Neck Scientific Group, Padua, Italy
| |
Collapse
|
6
|
Saraniti C, Montana F, Chianetta E, Greco G, Verro B. Impact of resection margin status and revision transoral laser microsurgery in early glottic cancer: analysis of organ preservation and local disease control on a cohort of 153 patients. Braz J Otorhinolaryngol 2020; 88:669-674. [PMID: 33272837 PMCID: PMC9483927 DOI: 10.1016/j.bjorl.2020.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/03/2020] [Accepted: 09/14/2020] [Indexed: 01/12/2023] Open
Abstract
Introduction Transoral laser microsurgery represents the treatment of choice for early glottic cancer. Its use and effectiveness are mainly related to laryngeal exposure and deep extension of tumor. Histopathologic assessment of surgical margin presents a main issue about transoral laser microsurgery and complete oncological excision. Objective The aim was to analyze the impact of revision surgery on organ preservation and local disease control in patients with early glottic cancer treated by transoral laser microsurgery. Methods We carried out a retrospective study on a cohort of 153 patients with early glottic cancer (Tis, T1, T2) treated by transoral laser microsurgery. Resection margins were classified as follows: “free” if macroscopic margin-tumor distance was at least 2 mm, as “close” if it was less than 2 mm and “positive” if the margin was involved by carcinoma. Patients were divided into two groups: patients with free resection margins (Group A) and patients with positive, close or not-evaluable resection margins (Group B). Group A (36) underwent periodic followup. Group B (117) underwent a second look laser CO2 2 months after surgery. Fifteen patients of Group A with suspected persistence of carcinoma during followup underwent a second laser resection after a time interval of 4–8 months after first surgery. Overall survival, disease-free survival, disease-specific survival, ultimate local control with laser alone and organ preservation rates were estimated. Results Five-year overall survival rate and 5-year disease-specific survival were 100% in both groups. The five-year laryngeal preservation rate was 100% in Group A and 95.2% in Group B. Five-year disease-free survival was 92.15% and 5-year ultimate local control with laser alone in 92.15% of patients. Conclusion This study has demonstrated that revision Transoral Laser Microsurgery is able to confirm the oncological radicality in most cases, even in the case of positive, close or non-evaluable margins. Considering our results, according to our experience, the second look with CO2 laser is a therapeutic strategy to consider, even in the case of close or non-evaluable as well as positive margins.
Collapse
Affiliation(s)
- Carmelo Saraniti
- Università degli Studi di Palermo, Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (BiND), Sezione di Otorinolaringoiatria, Palermo, Italy.
| | - Francesca Montana
- Università degli Studi di Palermo, Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (BiND), Sezione di Otorinolaringoiatria, Palermo, Italy
| | - Enzo Chianetta
- Università degli Studi di Palermo, Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (BiND), Sezione di Otorinolaringoiatria, Palermo, Italy
| | - Giuseppe Greco
- Università degli Studi di Palermo, Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (BiND), Sezione di Otorinolaringoiatria, Palermo, Italy
| | - Barbara Verro
- Università degli Studi di Palermo, Dipartimento di Biomedicina, Neuroscienze e Diagnostica avanzata (BiND), Sezione di Otorinolaringoiatria, Palermo, Italy
| |
Collapse
|
7
|
Verro B, Greco G, Chianetta E, Saraniti C. Management of Early Glottic Cancer Treated by CO2 Laser According to Surgical-Margin Status: A Systematic Review of the Literature. Int Arch Otorhinolaryngol 2020; 25:e301-e308. [PMID: 33968237 PMCID: PMC8096502 DOI: 10.1055/s-0040-1713922] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 05/10/2020] [Indexed: 12/11/2022] Open
Abstract
Introduction
Transoral laser microsurgery (TLM) is the treatment of choice for Tis-T2 squamous cell glottic carcinomas due to its advantages compared with open surgery and radiotherapy. However, the CO
2
laser beam causes changes and damage on the specimens, making the histological assessment of resection margins, the gold standard for confirming radical tumor resection, sometimes difficult.
Objective
To assess the different ways to manage patients depending on the status of the histopathological margin according to recent studies to detect the most commonly shared therapeutic strategy.
Data Synthesis
We analyzed the literature available on the PubMed and Web of Science databases, including only articles published since 2005, using specific keywords to retrieve articles whose titles and abstracts were read and analyzed independently by two authors to detect relevant studies. Therefore, we focused on disease-free survival, overall survival, local control, laryngeal preservation, and disease-specific survival. Thus, 17 studies were included in the present review; they were grouped according to the status of the histological margin, and we analyzed the different management policies described in them. This analysis showed that there is not a shared strategy, though in most studies the authors performed a second-look surgery in the cases of positive margins and a close follow-up in cases of negative ones. The main disagreement is regarding the management of close or non-valuable resection margins, since some some authors performed a second-look surgery, and others, a close follow-up.
Conclusions
Definitely, the most shared policy is the second-look surgery in case of positive surgical margins, and a close follow-up in case of close or non-valuable resection margins.
Key Points
Collapse
Affiliation(s)
- Barbara Verro
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, ENT Clinic, University of Palermo, Palermo, Italy
| | - Giuseppe Greco
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, ENT Clinic, University of Palermo, Palermo, Italy
| | - Enzo Chianetta
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, ENT Clinic, University of Palermo, Palermo, Italy
| | - Carmelo Saraniti
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, ENT Clinic, University of Palermo, Palermo, Italy
| |
Collapse
|
8
|
Kosztyła-Hojna B, Łuczaj J, Berger G, Duchnowska E, Zdrojkowski M, Łobaczuk-Sitnik A, Biszewska J. Perceptual and acoustic voice analysis in patients with glottis cancer after endoscopic laser cordectomy. Otolaryngol Pol 2020; 74:23-28. [PMID: 32398381 DOI: 10.5604/01.3001.0013.7850] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
<b>Introduction:</b> Treatment of glottis cancer, despite oncological safety, should consider postoperative voice quality. CO<sub>2</sub> laser endoscopic cordectomy allows radical removal of the tumor while maintaining respiratory, defensive and phonatory functions. <br><b>The aim:</b> The aim of the study is perceptual and acoustic evaluation of voice in patients after endoscopic CO2 III-Va laser cordectomy due to glottis cancer. <br><b>Material and method:</b> The study included 30 men after CO<sub>2</sub> cordectomy. 13 (43%) patients underwent type III cordectomy, 6 (20%) - type IV; 11 (37%) - type Va. Voice quality has been assessed 6 months after the surgery. Control group included 30 healthy men of the same age. GRBAS scale has been used in perceptual evaluation of voice. Acoustic analysis has been performed using DiagnoScope Specjalista software. Narrowband spectrography and Maximum Phonation Time (MPT) measure has been performed. <br><b>Results:</b> In study group, voice has been classified as G<sub>1</sub>R<sub>1</sub>B<sub>0</sub>A<sub>0</sub>S<sub>0</sub> after type III cordectomy; as G<sub>1</sub>R<sub>1</sub>B<sub>1</sub>A<sub>1</sub>S<sub>2</sub> in type IV and as G<sub>2</sub>R<sub>1</sub>B<sub>1</sub>A<sub>0</sub>S<sub>3</sub> in type Va. Acoustic evaluation revealed the highest values of F0, Jitter, Shimmer and NHR after Va cordectomy as well as non-harmonic components in narrowband spectrography and reduction of MPT. <br><b>Conclusions:</b> Postoperative voice quality depends on the type of cordectomy. Perceptual assessment indicates that type IV and Va cordectomy cause intensification of voice disorders. Parameters of acoustic evaluation increase with the extent of the procedure. The presence of non-harmonic components in narrowband spectrography increases with the extent of cordectomy, such as the reduction of MPT. Preservation of anterior commissure influences good voice quality in perceptual and acoustic assessment.
Collapse
Affiliation(s)
| | | | - Greta Berger
- Studia Doktoranckie, Wydział Lekarski Uniwersytetu Medycznego w Białymstoku
| | - Emilia Duchnowska
- Zakład Fonoaudiologii Klinicznej i Logopedii, Uniwersytet Medyczny w Białymstoku
| | - Maciej Zdrojkowski
- Zakład Fonoaudiologii Klinicznej i Logopedii, Uniwersytet Medyczny w Białymstoku
| | - Anna Łobaczuk-Sitnik
- Zakład Fonoaudiologii Klinicznej i Logopedii, Uniwersytet Medyczny w Białymstoku
| | - Jolanta Biszewska
- Zakład Fonoaudiologii Klinicznej i Logopedii, Uniwersytet Medyczny w Białymstoku
| |
Collapse
|