Journals / Türk Hematoloji Onkoloji Dergisi / 2003 / Cilt: 13 - Sayı: 4

Erken evre glottik larenks karsinomlarında yüksek günlük fraksiyon dozlu radyoterapi ile eş zamanlı akustik ses ve vokal fonksiyon analizi

Daily high dose per fraction radiotherapy in early glottic laryngeal tumors with concurrent analysis of voice quality and vocal function

Pages
190–199
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Subsequently, at 3 and 6 months follow up after radiotherapy, the comparison of objective voice parameters with pretreatment values showed an overall significant decrease for FF, jitter, shimmer and HNR.

📌 3 Key Takeaways

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Objective & Hypothesis:We prospectively assessed the outcome of daily high dose per fraction radiotherapy schema in early stage glottic carcinoma patients, along with objective analysis of vocal cord function and functional voice preservation.
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Key Findings & Data:Between June 1998 and February 2001, 61 patients with early stage (T1-2NOMO) squamous cell glottic carcinoma, who received definitive radiation therapy at Hacettepe University, were analyzed.
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Conclusion & Impact:Subsequently, at 3 and 6 months follow up after radiotherapy, the comparison of objective voice parameters with pretreatment values showed an overall significant decrease for FF, jitter, shimmer and HNR.
🔬Design:Research Article
📍Scope:2001 Verileri
⚙️Variables:Radyoterapi · Doz bölünmesi · Glottis

Abstract

We prospectively assessed the outcome of daily high dose per fraction radiotherapy schema in early stage glottic carcinoma patients, along with objective analysis of vocal cord function and functional voice preservation. Between June 1998 and February 2001, 61 patients with early stage (T1-2NOMO) squamous cell glottic carcinoma, who received definitive radiation therapy at Hacettepe University, were analyzed. Patients were treated homogeneously by Co 60 photon beams, with parallel-opposed laryngeal ports, at daily fractionation doses of 2.3 Gy over 27 fractions to 62.1Gy for Tl and 28 fractions to 64.4 Gy for T2 tumors. A longitudinal voice quality (VQ) and vocal function (VSL) study were prospectively conducted before, in the middle of and after radiotherapy, and every 3 months up to 9 months follow up. Acoustic measures of the fundamental frequency (FF, vocal cord vibration in Hz.), jitter (perturbation of vibration), shimmer (perturbation of loudness), and harmonic-to-noise ratio (HNR) were objectively calculated. Function of vocal cords was visually evaluated by videostrobolaringoscopy (VSL) with Hirano & Bless criteria. Median follow-up was 4 years (range, 3 - 67 months). Actuarial local control at 5-years was 90.1 % for Tl tumors (Tla, 90.1%; Tib, 85.7%) and crude local control was 6/9 (66.6%) for T2 tumors. Five year actuarial survival for T1NOMO patients was 92.9%. The pre-treatment objective voice quality values of the irradiated patients, in comparison with normal population values, showed elevated median scores for FF (154.8 Hz. ± 41.3 Hz.), jitter (%4.5 ± %4.3), shimmer (8.9 dB ± 6 dB), and HNR (0.25 dB ± 0.20 dB). Subsequently, at 3 and 6 months follow up after radiotherapy, the comparison of objective voice parameters with pretreatment values showed an overall significant decrease for FF, jitter, shimmer and HNR. Pretreatmentever both parameters improved by radiotherapy significantly. Irregularity in each cord recovered significantly in com-parison to preradiotherapy observation (left cord p= 0.03, right cord p= 0.01); as well as significantly better mucosal waves with better vibration were detected on both sides (left mucosa p= 0.03, right mucosa p= 0.02). Grade I or II acute morbidity (RTOG/EORTC) with dysphagia was observed at median 13th day of treatment (range, 10th-23rd days), but no grade 3 or 4 acute morbidity occurred. No late complications of grade 2-4 were detected in follow up. Our altered fractionation radiotherapy seems to be a highly tolerable and effective treatment modality, with less than normal but improved objective voice scores after irradiation in comparison to those prior to treatment. The outcome of different treatment alternatives in local control and voice quality must be an important issue for the best therapeu-tic option for early glottic larynx tumors, and irradiation appears to be a reasonable first choice.

Özet

Hacettepe Üniversitesi Radyasyon Onkolojisi Anabilim Dalında Haziran 1998 ile Şubat 2001 tarihleri arasında 61 Tl-T2NOMO glottik larinks karsinomlu hasta prospektif olarak yüksek günlük fraksiyon dozlu radyoterapi uygulanarak tedavi edildi. Olgulara haftada 5 gün, günlük tek fraksiyon ile 230 cGy karşılıklı paralel alanlarla uygulandi. Tl olgulara 27 fraksiyonla toplam 6210 cGy ve T2 hastalara 28 fraksiyonla toplam 6440 cGy verildi. Bu olgular arasından 27 olguda objektif ses analizi (fundamental frekans, frekans bozulması-jitter, amplitüd bozulması-shimmer, sesin içindeki gürültü oranı-noise to harmonics ratio, HNR) ve videolaringostroboskopi ile vokal kord fonksiyon değerlendirmesi (Hirano & Bless kriterleri) yapıldı. Medyan izlem süresi 4 yıl (3-67 ay) olarak bulundu. Beş yıllık lokal kontrol Tl hastalar için %90.1 (Tla %90.1,Tlb %85.7) ve T2 hastalar için lokal kontrol krud 6/9 (%66.6) olarak bulundu. T1NOMO olgularımızda 5 yıllık sağkalım %92.9'du. Olgularımızın iyi tolere ettiği radyoterapi süresince medyan 13. günde başlayan (10. - 23. gün) grade l ve 2 yutma güçlüğü gözlendi. Tedaviye ara vermemizi gerektirecek grade 3 ya da 4 bir akut morbidite izlenmedi. Hastalarımızda ön komissür tutulumunun, doku tanısı yönteminin, tedaviye kadar geçen sürenin, radyoterapi süresinin lokal kontrole etkisi istatistiksel olarak anlamlı bulunmadı. Akustik ses analizinde değerlendirdiğimiz parametre ölçümlerinin hastalıksız populasyon değerlerine oranla bozulmuş olduğu görüldü ve tedavi öncesinde jitter, shimmer ve HNR'de normal populasyon değerlerine göre yükseklik izlendi. Radyoterapinin bitiminden sonra yapılan ölçümlerde bu parametrelerde tedavi öncesine göre düşüş ve normal sınırlara yaklaşma gösterildi. Çalışmamızda videostroboskopi ile yapılan fonksiyon analizinde radyoterapinin başlamasından sonra vokal kordlarda tümöre bağlı düzensizlik azaldı ve mukozal dalga düzelerek daha iyi vibrasyon sağlandı. Bu çalışmada günlük yüksek fraksiyonlu radyoterapinin iyi tolere edildiği ve ses kalitesi ile vokal fonksiyonları normalleştirmese de tedavi öncesine göre düzelterek yüksek lokal kontrol oranları sağladığı izlenmiştir. Farklı tedavi yaklaşımlarının lokal kontrol ve ses kalitesindeki etkisi erken evre glottik larinks kanserlerinde en iyi tedavi opsiyonu seçerken göz önünde bulundurulmalıdır ve radyoterapi kabul edilebilir bir ilk seçenek olarak görünmektedir.

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Cite This Article

SELEK, U., AKYOL, F., ÖZYAR, E., SARI, S., YÜCEL, T., ÖZCEBE, E. (2003). Erken evre glottik larenks karsinomlarında yüksek günlük fraksiyon dozlu radyoterapi ile eş zamanlı akustik ses ve vokal fonksiyon analizi. Türk Hematoloji Onkoloji Dergisi, Cilt: 13 - Sayı: 4, 190–199. https://ajindex.com/articles/414012

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