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ORIGINAL ARTICLE
Year : 2017  |  Volume : 12  |  Issue : 1  |  Page : 66-69

Prospective, longitudinal, and quantitative analysis of pattern of voice quality in male patients of early-stage vocal cord cancer treated with radical radiation therapy


Department of Radiotherapy and Oncology, RMC, PMTPIMS, Loni, Maharashtra, India

Correspondence Address:
Chaitali Manohar Waghmare
Omkar's 201, Shri Sai Residency, Plot No 6823, Laxminagar, Near Rajpal Petrol Pump, Sevagram Road, Wardha - 442 001, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jdmimsu.jdmimsu_3_16

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Objective: An improvement in the voice quality after radiotherapy (RT) in early-stage vocal cord cancer (ESVCC) is well documented in the literature. The purpose of this study was to assess whether the voice quality ever reaches to normal and to evaluate pattern of change in voice quality over a period of 2 years in patients of ESVCC treated with radical RT. Materials and Methods: Newly diagnosed and histopathology proven patients of ESVCC treated with radical RT were screened. Voice analysis was done before treatment and during each follow-up after RT. Voice parameters of 19 healthy volunteers were used as control. Eighteen male patients for whom voice analysis was done over the period of 2 years were studied. All patients were educated to maintain vocal hygiene. Results: The study cohort of 18 male patients was comprised 11 patients of stage T1N0M0 and 7 patients of stage T2N0M0. All patients were free of disease till the time of the last follow-up. The minimum intensity improved significantly 2–6 months after RT, decreased a little 9–12 months after, and was sustained till 2 years of follow-up. The average frequency also improved significantly 2–6 months after RT, but the values were less than normal; it improved thereafter and remains sustained till 2 years of follow-up. The harmonics-to-noise ratio was persistently high till 1 year of follow-up, started improving thereafter. Maximum phonation time improved significantly 2–6 months after treatment, deteriorated thereafter, and started improving after 1 year of follow-up. Perturbation parameters were worse till 9–12 months post-RT and improved thereafter. Conclusion: The intensity and frequency improved earlier while the perturbation parameters took longer time to recover. However, voice after RT does not return to normal. Regular vocal rehabilitation exercises, during and after RT, may help to improve voice quality.


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