Clinical trial NCT02587546: Thulium Contact Laser of Laryngotracheal Stenosis
Official title: Thulium Contact Laser in the Treatment of Tumorous and Non-tumorous Laryngotracheal Stenosis
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Laryngeal Carcinoma
Bilateral Vocal Cord Paresis
Subglottic Stenosis
Keywords: laryngeal carcinoma
bilateral vocal cord paralysis
laryngotracheal stenosis
laser treatment
decannulation
voice
swallowing
Lead sponsor: University Hospital Ostrava
Sponsor class: OTHER
First posted: 2015-10-27
Enrollment: 31
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NON_RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The purpose of the study is to compare results of the treatment of tumorous and non-tumorous laryngotracheal stenosis using thulium contact laser versus carbon dioxide laser used in the past.

Detailed description: Laryngotracheal stenosis is a serious disease significantly worsening the quality of life. Impaired breathing often leads to tracheotomy, deterioration of the voice leads to communication problems with others and swallowing problems are often present, as well The main causes of laryngotracheal stenosis are post intubation and post tracheostomy conditions, inflammatory process (often autoimmune), tumors (mainly squamous cell carcinoma and chondroma) and trauma. Within the last years there is substantial shift in the treatment strategy from open surgery to endoscopic techniques. However, surgical treatment is often difficult due to demanding exposure of tumor and problematic margins control.

In recent years there has been a development of particular techniques of endoscopic resection of tumors and non-malignant laryngeal glottic and subglottic stenosis using a carbon dioxide (CO2) laser with promising improvement of treatment results.

However, CO2 laser has some limitations, particularly in the treatment of tumors spreading into anterior commissure, because CO2 laser beam cannot get "around the corner". Moreover, subglottic area is also difficult to be reached by CO2 laser beam. Therefore, contact laser with adjustable manipulators with possibility to bend tip of manipulator according to the actual need seems to be of some advantage.

Eligibility criteria: Inclusion Criteria:

1. patients with T1-T2 (some T3) laryngeal carcinoma
2. patients with bilateral vocal cord paralysis treated with partial arytenoidectomy and laterofixation
3. patients with subglottic stenosis treated endoscopically

Exclusion Criteria:

* non signing of informed consent

Primary outcomes:
measure: Percentage of carcinoma recurrence in the patient population
timeFrame: 36 months
Secondary outcomes:
measure: Percentage of decannulation in the patient population
timeFrame: 36 months
measure: Voice quality (Voice Handicap Index)
timeFrame: 36 months
measure: Swallowing (SWAL-QOL) questionnaire
timeFrame: 36 months
Other outcomes:
Locations:
city: Ostrava
country: Czechia
facility: University Hospital Ostrava
state: Moravian-Silesian Region
Study officials:
affiliation: University Hospital Ostrava
name: Karol Zelenik, MD,PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Warner L, Chudasama J, Kelly CG, Loughran S, McKenzie K, Wight R, Dey P. Radiotherapy versus open surgery versus endolaryngeal surgery (with or without laser) for early laryngeal squamous cell cancer. Cochrane Database Syst Rev. 2014 Dec 12;2014(12):CD002027. doi: 10.1002/14651858.CD002027.pub2.
citation: Greulich MT, Parker NP, Lee P, Merati AL, Misono S. Voice outcomes following radiation versus laser microsurgery for T1 glottic carcinoma: systematic review and meta-analysis. Otolaryngol Head Neck Surg. 2015 May;152(5):811-9. doi: 10.1177/0194599815577103. Epub 2015 Apr 2.
citation: Mendelsohn AH, Kiagiadaki D, Lawson G, Remacle M. CO2 laser cordectomy for glottic squamous cell carcinoma involving the anterior commissure: voice and oncologic outcomes. Eur Arch Otorhinolaryngol. 2015 Feb;272(2):413-8. doi: 10.1007/s00405-014-3368-9. Epub 2014 Oct 29.
citation: Szakacs L, Sztano B, Matievics V, Bere Z, Bach A, Castellanos PF, Rovo L. A comparison between transoral glottis-widening techniques for bilateral vocal fold immobility. Laryngoscope. 2015 Nov;125(11):2522-9. doi: 10.1002/lary.25401. Epub 2015 Jun 8.
citation: Riffat F, Palme CE, Veivers D. Endoscopic treatment of glottic stenosis: a report on the safety and efficacy of CO2 laser. J Laryngol Otol. 2012 May;126(5):503-5. doi: 10.1017/S002221511100301X. Epub 2011 Nov 1.
citation: Gallo A, Pagliuca G, Greco A, Martellucci S, Mascelli A, Fusconi M, De Vincentiis M. Laryngotracheal stenosis treated with multiple surgeries: experience, results and prognostic factors in 70 patients. Acta Otorhinolaryngol Ital. 2012 Jun;32(3):182-8.