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. 2016 Jun;36(3):167-73.
doi: 10.14639/0392-100X-643.

Oncological and complication assessment of CO2 laser-assisted endoscopic surgery for T1-T2 glottic tumours: clinical experience

A Galli  1 , L Giordano  1 , D Sarandria  1 , D Di Santo  1 , M Bussi  1
Affiliations

Oncological and complication assessment of CO2 laser-assisted endoscopic surgery for T1-T2 glottic tumours: clinical experience

A Galli et al. Acta Otorhinolaryngol Ital. 2016 Jun.

Abstract
in English, Italian

Several therapeutic options are used for treatment of early stage glottic carcinoma (Tis/T1/T2): open partial laryngectomy (OPL), radiotherapy and CO2 laser-assisted endoscopic surgery. Laser surgery has gradually gained approval in the management of laryngeal cancer. We present our experience in endoscopic laser surgery for early stage glottic carcinomas. This was a retrospective analysis of 72 patients with T1-T2 glottic cancer treated with laser cordectomy between 2006 and 2012. All patients had at least a 36-month follow-up period. Percentages for disease-specific survival, disease-free survival (DFS) and laryngeal preservation rates were 98.6%, 84.7% and 97.2% respectively. Considering neoplastic features that could predict long-term oncological outcome, tumoural involvement of anterior commissure and pathological staging (pT) significantly correlate with local recurrence (p = 0.021 and p = 0.035) and with a lowered DFS (p = 0.017 and p = 0.023). Other variables such as clinical staging, type of cordectomy, involvement of other structures and surgical margin status showed no significant impact on oncological endpoints. CO2 laser surgery is a reliable technique for T1-T2 glottic cancer considering oncological outcomes. The recurrence rate seems to be affected by involvement of anterior commissure and pT stage.

Esistono numerose strategie terapeutiche per il trattamento del carcinoma glottico in stadio iniziale (Tis/T1/T2): la laringectomia parziale a cielo aperto, la radioterapia e la chirurgia endoscopica condotta mediante laser CO2. In particolare quest’ultimo approccio ha gradualmente, ma inesorabilmente, acquisito un ruolo sempre più centrale nel management del cancro laringeo. In questo lavoro presentiamo la nostra esperienza in materia di chirurgia endoscopica laser-assistita delle neoplasie glottiche in stadio iniziale. è stata realizzata un’analisi retrospettiva su un campione di 72 pazienti affetti da carcinoma glottico in classe T1-T2 trattati con cordectomia laser endoscopica nel periodo compreso tra il 2006 e il 2012. Tutti i pazienti avevano almeno 36 mesi di follow-up. La disease-specific survival, la disease-free survival (DFS) e il tasso di preservazione laringea rilevati con il presente studio sono stati rispettivamente del 98,6%, 84,7% e 97,2%. Analizzando l’influenza sull’outcome oncologico a lungo termine di alcune tra le principali caratteristiche della malattia o del trattamento eseguito, abbiamo riscontrato come il coinvolgimento da parte del tumore della commissura anteriore e lo staging patologico della neoplasia (pT) correlino significativamente con un aumentato tasso di recidiva locale (p = 0,021 e p = 0,035) e con una ridotta DFS (p = 0,017 e p = 0,023). Gli altri parametri presi in esame, come staging clinico, tipo di cordectomia, coinvolgimento di altre specifiche sottosedi laringee e stato dei margini di resezione, non si sono dimostrati, invece, correlare significativamente con gli endpoint oncologici stabiliti. La chirurgia endoscopica laser-assistita è quindi una tecnica estremamente affidabile per il trattamento dei tumori glottici in stadio iniziale in termini di outcome oncologico. Il tasso di recidiva risulta significativamente influenzato dal coinvolgimento della commissura anteriore e dal pT.

Keywords: CO2 laser-surgery; Early stage; Endoscopic cordectomy; Glottic carcinoma; Laryngeal cancer; Larynx.

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Figures

Fig. 1.
Fig. 1.
Bar chart showing 3-year recurrence rates according to pT stage (p = 0.035).
Fig. 2.
Fig. 2.
Bar chart showing 3-year recurrence rates according to anterior commissure involvement (p = 0.021).
Fig. 3.
Fig. 3.
Kaplan-Meier survival curves stratified according to pT stage (p = 0.023).
Fig. 4.
Fig. 4.
Kaplan-Meier survival curves stratified according to anterior commissure involvement (p = 0.017).
See this image and copyright information in PMC

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