Exclusive radiotherapy for early-stage glottic cancer: A single-institution retrospective analysis with a focus on voice quality

Ilenia Potenza, Pierfrancesco Franco, Francesco Moretto, Serena Badellino, Vittoria Balcet, Giuseppe Rossi, Vincenzo Landolfo, Giuseppe Riva, Giancarlo Pecorari, Riccardo Ragona, Monica Rampino, Umberto Ricardi

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Abstract

Aim: To report on clinical outcomes of patients with early-stage glottic cancer treated with exclusive radiotherapy with specific analysis of voice quality. Patients and Methods: A consecutive cohort of 55 patients with early glottic cancer was retrospectively analyzed. Patients were treated with exclusive radiation up to a conventionally fractionated total dose of 66-70 Gy with a 3-dimensional conformal technique. Oncological outcomes and toxicity profiles were investigated. A sub-sample of this cohort was also analyzed in terms of voice quality employing subjective and objective tools such as the Voice Handicap Index-10 (VHI-10) and the Multidimensional Voice Program (MDVP") software and was compared to a group of similar patients treated with CO2 laser cordectomy. Results: after a median observation time of 74.5 months, 5- and 10-year local control was 89% [95% confidence interval (CI)=70.7-93.1%] and 86% (95% CI=68.7-89.6%), respectively. Larynx-preservation rate was 91.8% (95% CI=82.4%-94.9%) at 10 years. Five- and 10-year actuarial overall survival was 72% (95% CI=50.4-79.2%) and 56% (95% CI=48.7-64.3%). Maximum detected acute toxicity included G3 dermatitis (5.4%) and G4 dyspnea (1.8%). Late toxicity profile was mild. VHI-10 scores showed a mild voice disability in both groups, with no statistically significant difference (p=0.12), even when investigating different domains. Patients treated with radiation had a lower deterioration rate in all parameters excluding low voice, interruptions of sound and diplophony. Conclusion: Exclusive radiation proved an effective treatment for patients with early glottic cancer in terms of both oncological outcome and voice quality.

Original languageEnglish
Pages (from-to)4155-4160
Number of pages6
JournalAnticancer Research
Volume35
Issue number7
Publication statusPublished - Jul 1 2015

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Keywords

  • Glottic cancer
  • Radiotherapy
  • Voice quality

ASJC Scopus subject areas

  • Cancer Research
  • Oncology
  • Medicine(all)

Cite this

Potenza, I., Franco, P., Moretto, F., Badellino, S., Balcet, V., Rossi, G., Landolfo, V., Riva, G., Pecorari, G., Ragona, R., Rampino, M., & Ricardi, U. (2015). Exclusive radiotherapy for early-stage glottic cancer: A single-institution retrospective analysis with a focus on voice quality. Anticancer Research, 35(7), 4155-4160.