1
|
Dekura Y, Yasuda K, Minatogawa H, Uchinami Y, Tsushima N, Suzuki T, Kano S, Mori T, Nishioka K, Kobashi K, Katoh N, Homma A, Aoyama H. Daily fraction dose-adjusted radiotherapy policy to avoid prolonging the overall treatment time for early glottic squamous cell carcinoma: a single-institutional retrospective study. JOURNAL OF RADIATION RESEARCH 2024; 65:63-70. [PMID: 37952082 PMCID: PMC10803170 DOI: 10.1093/jrr/rrad080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/24/2023] [Indexed: 11/14/2023]
Abstract
The objective of this study was to determine the outcomes of radical radiotherapy for early glottic squamous cell carcinoma (EGSCC) with the policy of increasing the fraction size during radiotherapy when the overall treatment time (OTT) was expected to be prolonged. Patients diagnosed with clinical T1-2N0M0 EGSCC, who were treated with radical radiotherapy between 2008 and 2019 at Hokkaido University Hospital, were included. Patients received 66 Gy in 33 fractions for T1 disease and 70 Gy in 35 fractions for T2 disease as our standard regimen (usual group [UG]). If the OTT was expected to extend for >1 week, the dose fraction size was increased from 2.0 to 2.5 Gy from the beginning or during radiotherapy (adjusted group [AG]). At this time, we performed a statistical analysis between UG and AG. In total, 116 patients were identified, and the treatment schedules of 29 patients were adjusted. The median follow-up was 60.9 months. In the T1 group, the cumulative 5-year local failure rate was 12.0% in the AG and 15.4% in the UG, and in the T2 group, the rate was 40.7% in the AG and 25.3% in the UG. There were no significant differences between the AG and UG. Similarly, no significant differences were observed for overall survival and progression-free survival rates. Our single-institutional retrospective analysis of EGSCC patients suggested that a method of adjusting the radiotherapy schedule to increase fraction size from the beginning or during the course may be effective in maintaining treatment outcomes.
Collapse
Affiliation(s)
- Yasuhiro Dekura
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
- Department of Radiation Oncology, Kin-ikyo Chuo Hospital, 1-9-1 Higashinaebo5, Higashi-ku, Sapporo, Hokkaido 007-0805 , Japan
| | - Koichi Yasuda
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Hideki Minatogawa
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Yusuke Uchinami
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
- Department of Radiation Oncology, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Nayuta Tsushima
- Department of Otolaryngology-Head and Neck Surgery, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Takayoshi Suzuki
- Department of Otolaryngology-Head and Neck Surgery, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Satoshi Kano
- Department of Otolaryngology-Head and Neck Surgery, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Takashi Mori
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Kentaro Nishioka
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
- Department of Radiation Medical Science and Engineering, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Keiji Kobashi
- Global Center for Biomedical Science and Engineering, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Kita15, Nishi7, Kita-Ku, Sapporo, Hokkaido 060-8638, Japan
| | - Norio Katoh
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
- Department of Radiation Oncology, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Akihiro Homma
- Department of Otolaryngology-Head and Neck Surgery, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| | - Hidefumi Aoyama
- Department of Radiation Oncology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
- Department of Radiation Oncology, Faculty and Graduate School of Medicine, Hokkaido University, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido 060-8648, Japan
| |
Collapse
|
2
|
Wang WL, Zheng HW, Zhang LH, Yu LS. Effect of treatment modality on the long-term survival of patients with early glottic squamous cancer: a retrospective cohort study based on the SEER database. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:440. [PMID: 35571433 PMCID: PMC9096410 DOI: 10.21037/atm-21-5288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/14/2022] [Indexed: 11/06/2022]
Abstract
Background The optimal treatment strategy for patients with early glottic (T1-2N0M0) squamous cancer remains unclear. Methods A retrospective population-based analysis was performed using the Surveillance, Epidemiology, and End Results (SEER) database. Propensity score matching (PSM) was used to balance treatment arms, and Cox regression analysis was used to determine prognostic factors for survival. Kaplan-Meier analysis, log-rank tests, and competing risk analysis were used to compare survival outcomes between treatment modalities (surgery vs. radiotherapy). Results Among the 3,994 eligible patients in this study, surgery was associated with improved cancer-specific survival (CSS) and overall survival (OS) compared with radiotherapy (log-rank test, P<0.05). This survival trend favoring surgery was consistent in the T1a, well/moderately differentiated grade, male, and all age subgroups. However, after the baseline characteristics were balanced with PSM, the survival outcomes (CSS and OS) did not differ significantly between the surgery and radiotherapy groups. Interestingly, surgery was associated with a 39% reduced risk of cancer-related death compared with radiotherapy in patients aged ≥70 years (hazard ratio 0.61; 95% CI: 0.43-0.87; P=0.006). However, this survival trend favoring surgery was not observed in younger patients (age <70 years), T stage subgroups, male or female subgroups, or in any of the pathological grade subgroups. Conclusions In patients with early glottic squamous cell carcinoma undergoing surgery or radiotherapy, there is no sufficient evidence favoring one method over another in terms of survival. However, surgery is recommended in patients aged ≥70 years because, in this group, it was associated with improved survival outcomes compared with radiotherapy.
Collapse
Affiliation(s)
- Wen-Lun Wang
- Department of Otorhinolaryngology-Head and Neck Surgery, Peking University People's Hospital, Beijing, China
| | - Hong-Wei Zheng
- Department of Otorhinolaryngology-Head and Neck Surgery, Peking University People's Hospital, Beijing, China
| | - Li-Hong Zhang
- Department of Otorhinolaryngology-Head and Neck Surgery, Peking University People's Hospital, Beijing, China
| | - Li-Sheng Yu
- Department of Otorhinolaryngology-Head and Neck Surgery, Peking University People's Hospital, Beijing, China
| |
Collapse
|
3
|
Ranta P, Kytö E, Nissi L, Kinnunen I, Vahlberg T, Minn H, Haapio E, Nelimarkka L, Irjala H. Dysphagia, hypothyroidism, and osteoradionecrosis after radiation therapy for head and neck cancer. Laryngoscope Investig Otolaryngol 2022; 7:108-116. [PMID: 35155788 PMCID: PMC8823172 DOI: 10.1002/lio2.711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 11/26/2021] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES To analyze the long-term side effects of radiation therapy (RT) for head and neck cancer (HNC). METHODS Retrospective chart analysis of all 688 HNC patients treated during 2010-2015 at Turku University Hospital, Finland. All patients who survived for more than a year after RT/chemoRT were included (n = 233). Intensity modulated RT (IMRT) with standard fractionation was applied in each case. RESULTS One hundred and six patients (45%) reported persisting dysphagia, for which neck RT increased risk. Definitive neck RT to high-risk volume did not increase late toxicity risks compared to elective neck RT. Radiation-induced hypothyroidism (29%, n = 67) was more common among younger patients and females. Osteoradionecrosis (12%, n = 29) was more common in the oral cavity cancer group (20.7%, n = 92) compared to all other subsites. CONCLUSIONS Late toxicities of RT for HNC are common. Age, gender, tumor subsite, and neck RT affect susceptibility to long-term side effects. LEVEL OF EVIDENCE 4.
Collapse
Affiliation(s)
- Pihla Ranta
- Department of Otorhinolaryngology - Head and Neck Surgery Turku University and Turku University Hospital Turku Finland
| | - Eero Kytö
- Department of Otorhinolaryngology - Head and Neck Surgery Turku University and Turku University Hospital Turku Finland
| | - Linda Nissi
- Department of Oncology and Radiotherapy Turku University and Turku University Hospital Turku Finland
| | - Ilpo Kinnunen
- Department of Otorhinolaryngology - Head and Neck Surgery Turku University and Turku University Hospital Turku Finland
| | - Tero Vahlberg
- Department of Clinical Medicine, Biostatistics Turku University and Turku University Hospital Turku Finland
| | - Heikki Minn
- Department of Oncology and Radiotherapy Turku University and Turku University Hospital Turku Finland
| | - Eeva Haapio
- Department of Otorhinolaryngology - Head and Neck Surgery Turku University and Turku University Hospital Turku Finland
| | - Lassi Nelimarkka
- Department of Endocrinology, Division of Medicine Turku University and Turku University Hospital Turku Finland
| | - Heikki Irjala
- Department of Otorhinolaryngology - Head and Neck Surgery Turku University and Turku University Hospital Turku Finland
| |
Collapse
|
4
|
Laryngectomy-free survival after salvage partial laryngectomy: a systematic review and meta-analysis. Eur Arch Otorhinolaryngol 2022; 279:3021-3027. [PMID: 35039895 DOI: 10.1007/s00405-022-07257-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/03/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Radiotherapy (RT) is widely used for early glottic cancer. Patients failing this treatment are referred to surgical management of their disease. Salvage partial laryngectomy (SPL) has the advantage of preserving laryngeal function with total laryngectomy (TL) remaining as a last resort. The purpose of this study was to determine the efficacy of SPL in preventing total laryngectomy, following failed RT, for early glottic cancer. METHODS A meta-analysis of all published English literature was performed. All publications that included patients undergoing SPL were reviewed according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA) reporting guidelines. The search strategy identified 154 relevant articles. A total of 15 retrospective studies that included 323 suitable patients were subsequently analyzed in this meta-analysis. The main outcome measure was the rate of laryngectomy-free survival (LFS) following SPL. The indications for salvage TL (i.e., disease recurrence and poorly functional larynxes) as well as subgroup analyses for open and trans-oral SPLs were also calculated. RESULTS The overall rate of LFS following SPL was 81.2% (fixed effects model range: 75.7-86.8%). Salvage TL following SPL were performed in 96.8% due to disease recurrence and in 3.2% to poorly functional larynxes. A subgroup analysis showed a 90.4% LFS after open SPL and 78.6% following trans-oral SPL. CONCLUSION A high rate of successful salvage partial laryngectomies, regardless of surgical technique, is to be anticipated in well-selected patients after RT failure.
Collapse
|
5
|
Amini A, Morgan R, Meyer E, Fakhoury K, Ladbury C, Bickett T, McDermott JD, Stokes W, Karam SD. Outcomes between intensity-modulated radiation therapy versus 3D-conformal in early stage glottic cancer. Head Neck 2021; 43:3393-3403. [PMID: 34382714 DOI: 10.1002/hed.26841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 07/01/2021] [Accepted: 07/29/2021] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The purpose of this study is to evaluate practice patterns and outcomes between intensity-modulated radiation therapy (IMRT) and 3D-conformal radiation (3D-CRT) in early stage glottic cancer. METHODS The linked Surveillance, Epidemiology, and End Results (SEER)-Medicare database was used to identify and compare patient and disease profiles, mortality, and toxicity in patients with T1-2 larynx cancer undergoing definitive radiation (RT). RESULTS A total of 1520 patients underwent definitive radiation with 3D-CRT (n = 1309) or IMRT (n = 211). Non-white race, those with a Charlson Comorbidity Index ≥2, T2 disease, and those treated at community practices were more likely to undergo IMRT. Rates of IMRT increased from 2006 to 2015, while relative rates of 3D-CRT decreased. Two-year CSS was superior with 3D-CRT (hazard ratio [HR], 0.38; 95% confidence interval [CI], 0.22-0.65; p < 0.001). There was no difference in OS between 3D-CRT and IMRT (p = 0.119). CONCLUSIONS Patients receiving 3D-CRT had improved CSS compared to IMRT with no difference in OS.
Collapse
Affiliation(s)
- Arya Amini
- Department of Radiation Oncology, City of Hope Cancer Center, Duarte, California, USA
| | - Rustain Morgan
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Elisabeth Meyer
- Department of Health Systems Management and Policy, Colorado Comprehensive Cancer Center, University of Colorado, Aurora, Colorado, USA
| | - Kareem Fakhoury
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Colton Ladbury
- Department of Radiation Oncology, City of Hope Cancer Center, Duarte, California, USA
| | - Thomas Bickett
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Jessica D McDermott
- Department of Medical Oncology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - William Stokes
- Department of Radiation Oncology, Emory University, Atlanta, Georgia, USA
| | - Sana D Karam
- Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado, USA
| |
Collapse
|
6
|
Okubo M, Itonaga T, Saito T, Shiraishi S, Mikami R, Sakurada A, Sugahara S, Park J, Tokuuye K, Saito K. Predictive factors for local control of early glottic squamous cell carcinomas after definitive radiotherapy. Mol Clin Oncol 2020; 12:541-550. [PMID: 32337036 DOI: 10.3892/mco.2020.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/29/2020] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to retrospectively investigate the risk factors of local failure for T1 glottic carcinoma irradiated with a prescription dose of 66 Gy. Between July 2006 and December 2017, 64 patients with T1 glottic squamous cell carcinoma treated with 66 Gy/33 fractions were analyzed for risk factors of local failure. The sex, age, performance status, T stage, overall treatment time, anterior commissure involvement, smoking status during/after treatment, histological tumor grade and pretreatment hemoglobin level were investigated. The maximum, mean and minimum doses, and the homogeneity index for the glottic larynx were calculated for dosimetric risk factors of local failure. The median follow-up duration was 51 months. Local failure was observed in 6 patients (9.5%). Among all risk factors, only the minimum dose to the glottic larynx was found to be significantly associated with local failure (P=0.025). The 5-year local control rates for a minimum dose to the glottic larynx of <65 and ≥65 Gy were 79 and 95%, respectively, with a statistically significant difference (P=0.015). No patients exhibited grade ≥3 late adverse effects. The minimum dose to the glottic larynx was the only factor significantly associated with local failure. Thus, local control of T1 glottic carcinoma may improve with a minimum dose of ≥65 Gy to the glottic larynx. In conclusion, radiotherapy with a minimum prescription dose of ≥65 Gy to the glottic larynx appears to be safe and achieves a high local control rate for T1 glottic carcinoma.
Collapse
Affiliation(s)
- Mitsuru Okubo
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Tomohiro Itonaga
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Tatsuhiko Saito
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Sachika Shiraishi
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Ryuji Mikami
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Akira Sakurada
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Shinji Sugahara
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Jinho Park
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Koichi Tokuuye
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| | - Kazuhiro Saito
- Department of Radiology, Tokyo Medical University Hospital, Tokyo 160-0023, Japan
| |
Collapse
|
7
|
Cho IJ, Chung WK, Lee JK, Lee MC, Paek J, Kim YH, Jeong JU, Yoon MS, Song JY, Nam TK, Ahn SJ, Lee DH, Yoon TM, Lim SC. Intensity-modulated radiotherapy for stage I glottic cancer: a short-term outcomes compared with three-dimensional conformal radiotherapy. Radiat Oncol J 2019; 37:271-278. [PMID: 31918465 PMCID: PMC6952717 DOI: 10.3857/roj.2019.00283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 10/07/2019] [Indexed: 12/16/2022] Open
Abstract
Purpose To investigate the differences in treatment outcomes between two radiation techniques, intensity-modulated radiotherapy (IMRT) and three-dimensional conformal radiotherapy (3DCRT). Materials and Methods We retrospectively analyzed 160 (IMRT = 23, 3DCRT = 137) patients with stage I glottic cancer treated from January 2005 through December 2016. The IMRT was performed with TomoTherapy (16 patients), volumetric-modulated arc therapy (6 patients), and step-and-shoot technique (1 patient), respectively. The 3DCRT was performed with bilateral parallel opposing fields. The median follow-up duration was 30 months (range, 31 to 42 months) in the IMRT group and 65 months (range, 20 to 143 months) in the 3DCRT group. Results The 5-year overall survival and 3-year local control rates of the 160 patients were 95.7% and 91.4%, respectively. There was no significant difference in 3-year local control rates between the IMRT and 3DCRT groups (94.4% vs. 91.0%; p = 0.587). Thirteen of 137 patients in the 3DCRT group had recurrences. In the IMRT group, one patient had a recurrence at the true vocal cord. Patients treated with IMRT had less grade 2 skin reaction than the 3DCRT group, but this had no statistical significance (4.3% vs. 21.2%; p = 0.080). Conclusion IMRT had comparable outcomes with 3DCRT, and a trend of less acute skin reaction in stage I glottic cancer patients
Collapse
Affiliation(s)
- Ick Joon Cho
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Woong-Ki Chung
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Joon Kyoo Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Min-Cheol Lee
- Department of Pathology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Jayeong Paek
- Institute for Biomedical Science, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Yong-Hyub Kim
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Jae-Uk Jeong
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Mee Sun Yoon
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Ju-Young Song
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Taek-Keun Nam
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Sung-Ja Ahn
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Dong Hoon Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Tae Mi Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - Sang-Chul Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| |
Collapse
|
8
|
Involvement of the Anterior Commissure in Early Glottic Cancer (Tis-T2): A Review of the Literature. Cancers (Basel) 2019; 11:cancers11091234. [PMID: 31450795 PMCID: PMC6769981 DOI: 10.3390/cancers11091234] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 12/17/2022] Open
Abstract
Background: The impact of the anterior commissure (AC) involvement on prognosis in laryngeal cancer remains a topic of discussion with inconsistent results in the literature. This review examines AC involvement as a prognostic factor in patients with early glottic cancer (Tis-T2) treated with radiotherapy or transoral laser microsurgery (TLM). Methods: A systematic literature search was performed. Due to the heterogeneity of the data, no meta-analysis was implemented. Weighted averages were calculated if the appropriate data were extractable. Results: Thirty-four studies on radiotherapy and 23 on TLM fit the inclusion criteria. The majority of studies for both radiotherapy (67.7%) and TLM (75.0%) did not report a significant impact on oncological outcomes. Weighted averages were slightly lower in patients with AC involvement. The two studies that applied a more detailed classification showed a significant impact on the amount of AC involvement. Conclusions: Binary variables (yes/no) for AC involvement lead to inconsistent results. Studies that use more detailed classifications of the AC show that there is a significant impact on the outcome. To further elucidate the role of the AC, detailed stratification of tumors involving the AC need to be investigated in further studies for both treatment modalities.
Collapse
|
9
|
Lee JW, Lee JE, Park J, Sohn JH, Ahn D. Hypofractionated radiotherapy for early glottic cancer: a retrospective interim analysis of a single institution. Radiat Oncol J 2019; 37:82-90. [PMID: 31266289 PMCID: PMC6610011 DOI: 10.3857/roj.2019.00143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/17/2019] [Indexed: 01/19/2023] Open
Abstract
PURPOSE To evaluate the results of hypofractionated radiotherapy (HFX) for early glottic cancer. MATERIALS AND METHODS Eighty-five patients with cT1-2N0M0 squamous cell carcinoma of the glottis who had undergone HFX, performed using intensity-modulated radiotherapy (IMRT, n = 66) and three-dimensional conformal radiotherapy (3D CRT, n = 19) were analyzed. For all patients, radiotherapy was administered at 60.75 Gy in 27 fractions. Forty-three patients received a simultaneous integrated boost (SIB) of 2.3-2.5 Gy per tumor fraction. RESULTS The median follow-up duration was 29.9 months (range, 5.5 to 76.5 months). All patients achieved complete remission at a median of 50 days after the end of radiotherapy (range, 14 to 206 days). The 5-year rates for locoregional recurrence-free survival was 88.1%, and the 5-year overall survival rate was 86.2%. T2 stage was a prognostic factor for locoregional recurrencefree survival after radiotherapy (p = 0.002). SIB for the tumor did not affect disease control and survival (p = 0.191 and p = 0.387, respectively). No patients experienced acute or chronic toxicities of ≥grade 3. IMRT significantly decreased the dose administered to the carotid artery as opposed to 3D CRT (V35, p < 0.001; V50, p < 0.001). Conclusions Patients treated with HFX achieved acceptable locoregional disease control rates and overall survival rates compared with previous HFX studies. A fraction size of 2.25 Gy provided good disease control regardless of SIB administration.
Collapse
Affiliation(s)
- Jeong Won Lee
- Department of Radiation Oncology, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Jeong Eun Lee
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Junhee Park
- Department of Radiation Oncology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jin Ho Sohn
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Dongbin Ahn
- Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| |
Collapse
|
10
|
Asher D, Amestoy W, Studenski MT, Samuels SE, Abramowitz MC, Freedman LM, Elsayyad N, Samuels MA. Dosimetric comparison of intensity-modulated radiation therapy for early-stage glottic cancers with and without the air cavity in the planning target volume. Med Dosim 2019; 44:405-408. [PMID: 30928177 DOI: 10.1016/j.meddos.2019.02.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 10/27/2022]
Abstract
For early-stage glottic cancers, intensity-modulated radiation therapy (IMRT) has been shown to have comparable local control to 3D-conformal radiotherapy with the advantage of decreased dose to the carotid arteries. The planning target volume (PTV) for early glottic cancers typically includes the entire larynx, plus a 3 to 5 mm uniform margin. The air cavity within the larynx creates a challenge for the inverse optimization process as the software attempts to "build up" dose within the air. This unnecessary attempt at dose build-up in air can lead to hot spots within the rest of the PTV and surrounding soft tissue. We hypothesized that removal of the air from the PTV would decrease hot spots and allow for a more homogeneous plan while still maintaining adequate coverage of the PTV. We analyzed 20 consecutive patients with early-stage glottic cancer, T1-2N0, who received IMRT at our institution from April 2015 to December 2016. Each patient received 63 to 65.25 Gy in 2.25 Gy per fraction. Two plans were created for each case: one in which the PTV included the laryngeal air cavity and one in which the air cavity was subtracted from the PTV to create a new PTV-air structure. Dosimetric variables were collected for PTV-air structure from both IMRT plans, including V100%, D98% D2%, and D0.2%. Dosimetric variables for spinal cord and the carotid arteries were also recorded. Homogeneity index (HI) defined as D98/D2 was calculated. Two-sided t-tests were used to compare dosimetric variables. The median PTV volume was 69.9 cc (standard deviation [SD] ± 28.7 cc) and the median air cavity volume removed was 11.0 cc (SD ± 3.4 cc). A 2-sided t-test revealed a statistically significant decrease in max dose (112.7% vs 108.8%, p value = 0.0002) and improvement of HI (0.93 vs 0.91, p value = 0.0023) for the PTV air in the IMRT plan optimized for PTV air, which had air excluded, compared to the IMRT plan optimized for PTV with air included. There was no significant worsening of PTV-air coverage or significant increase in doses to the organs at risk (OARs). The removal of the air cavity from the PTV for early-stage glottic cancers does not compromise PTV coverage or sparing of OARs and can result in a more homogeneous IMRT plan. A more homogeneous plan has the potential to reduce treatment morbidity, although further study is warranted to investigate the clinical impact of air cavity removal from the PTV.
Collapse
Affiliation(s)
- David Asher
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - William Amestoy
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Matthew T Studenski
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Stuart E Samuels
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Matthew C Abramowitz
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Laura M Freedman
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Nagy Elsayyad
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA
| | - Michael A Samuels
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL 33136, USA.
| |
Collapse
|
11
|
Partial Laryngeal IMRT for T2N0 Glottic Cancer: Impact of Image Guidance and Radiation Therapy Intensification. Int J Radiat Oncol Biol Phys 2018; 102:941-949. [DOI: 10.1016/j.ijrobp.2018.03.034] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/08/2018] [Accepted: 03/22/2018] [Indexed: 11/23/2022]
|
12
|
Dixon LM, Douglas CM, Shaukat SI, Garcez K, Lee LW, Sykes AJ, Thomson D, Slevin NJ. Conventional fractionation should not be the standard of care for T2 glottic cancer. Radiat Oncol 2017; 12:178. [PMID: 29137654 PMCID: PMC5686811 DOI: 10.1186/s13014-017-0915-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 11/02/2017] [Indexed: 01/14/2023] Open
Abstract
Background The aim of this study was to report outcomes and late toxicity following hypofractionated accelerated radiotherapy for T2 glottic cancers. We highlight the importance of hypofractionated treatments with shorter overall treatment times, in improving outcomes for T2 glottic cancers. We also compare the biologically effective dose of hypofractionated regimes, with conventional fractionation. Methods One hundred twelve patients with T2 glottic cancer were treated between January 1999 and December 2005. All patients were prescribed a hypofractionated accelerated radiotherapy dose of 52.5 Gray in 3.28 Gray per fraction, delivered over 22 days. Radiobiological calculations were used to assess the relationship of fraction size and overall treatment time on local control outcomes and late toxicity. Results The 5-year overall survival was 67%, the 5-year local control was 82%, and the 5-year disease-specific survival was 90%. The respective 5-year local control for T2a and T2b disease was 88.8 and 70.8% (p = 0.032). Severe late toxicity occurred in two patients (1.8%). Radiobiological calculations showed an increase in local control of nearly 12%, with a 10 Gray increase in biologically effective dose. Conclusion This study has demonstrated that accelerated hypofractionated regimes have improved local control and similar late toxicity compared with conventional fractionation schedules. This supports the use of hypofractionated regimes as the standard of care for early glottic laryngeal cancers.
Collapse
Affiliation(s)
- Lynne M Dixon
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK.
| | - Catriona M Douglas
- Department of Otolaryngology - Head and Neck Surgery, Queen Elizabeth University Hospital, 1345 Govan Road, Glasgow, G51 4TF, UK
| | - Shazril Imran Shaukat
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - Kate Garcez
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - Lip Wai Lee
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - Andrew J Sykes
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - David Thomson
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| | - Nicholas J Slevin
- Department of Clinical Oncology, The Christie NHS Foundation Trust, Wilmslow Road, Manchester, M20 4BX, UK
| |
Collapse
|
13
|
Marciscano AE, Charu V, Starmer HM, Best SR, Quon H, Hillel AT, Akst LM, Kiess AP. Evaluating Post-Radiotherapy Laryngeal Function with Laryngeal Videostroboscopy in Early Stage Glottic Cancer. Front Oncol 2017; 7:124. [PMID: 28660173 PMCID: PMC5467001 DOI: 10.3389/fonc.2017.00124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 05/29/2017] [Indexed: 12/02/2022] Open
Abstract
Objective Dysphonia is common among patients with early stage glottic cancer. Laryngeal videostroboscopy (LVS) has not been routinely used to assess post-radiotherapy (RT) voice changes. We hypothesized that LVS would demonstrate improvement in laryngeal function after definitive RT for early-stage glottic cancer. Study design Blinded retrospective review of perceptual voice and stroboscopic parameters for patients with early glottic cancer and controls. Setting High-volume, single-institution academic medical center. Subjects and methods Fifteen patients underwent RT for Tis-T2N0M0 glottic cancer and were evaluated with serial LVS exams pre- and post-RT. Stroboscopic assessment included six parameters: vocal fold (VF) vibration, VF mobility, erythema/edema, supraglottic compression, glottic closure, and secretions. Grade, roughness, breathiness, asthenia, strain (GRBAS) voice perceptual scale was graded in tandem with LVS score. Assessments were grouped by time interval from RT: pre-RT, 0–4, 4–12, and >12 months post-RT. Results 60 LVS exams and corresponding GRBAS assessments were reviewed. There were significant improvements in ipsilateral VF motion (P = 0.03) and vibration (P = 0.001) and significant worsening in contralateral VF motion (P < 0.001) and vibration (P = 0.008) at >12 months post-RT. Glottic closure significantly worsened, most prominent >12 months post-RT (P = 0.01). Composite GRBAS scores were significantly improved across all post-RT intervals. Conclusion LVS proved to be a robust tool for assessing pre- and post-RT laryngeal function. We observed post-RT improvement in ipsilateral VF function, a decline in contralateral VF function, and decreased glottic closure. These results demonstrate that LVS can detect meaningful changes in VF and glottic function and support its use for post-RT evaluation of glottic cancer patients.
Collapse
Affiliation(s)
- Ariel E Marciscano
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Vivek Charu
- The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Heather M Starmer
- Department of Otolaryngology (Head and Neck Surgery), Stanford University School of Medicine, Stanford, CA, United States
| | - Simon R Best
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Harry Quon
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, United States.,Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Alexander T Hillel
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Lee M Akst
- Department of Otolaryngology-Head and Neck Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Ana P Kiess
- Department of Radiation Oncology and Molecular Radiation Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD, United States
| |
Collapse
|
14
|
Samuels MA, Freedman LM, Elsayyad N. Intensity-modulated radiotherapy for early glottic cancer: transition to a new standard of care? Future Oncol 2016; 12:2615-2630. [DOI: 10.2217/fon-2016-0156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
For decades, the standard of care for radiation treatment of early larynx cancers has been conventional treatment using opposed lateral fields encompassing the larynx and overlying neck structures, including the adjacent carotid arteries. While intensity-modulated radiotherapy (IMRT) has replaced conventional radiotherapy for all other head/neck cancer situations, the use of IMRT to treat early glottic cancers remains controversial. The article reviews the published experience with IMRT for this clinical situation and provides a detailed review of the literature on radiation-induced carotid toxicity and how it might apply to the controversy. Finally, we discuss whether the radiation oncology community should transition to IMRT as a new standard of care for the treatment of early glottic cancers.
Collapse
Affiliation(s)
- Michael A Samuels
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | - Laura M Freedman
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL, USA
| | - Nagy Elsayyad
- Department of Radiation Oncology, University of Miami/Sylvester Comprehensive Cancer Center, Miami, FL, USA
| |
Collapse
|
15
|
Yeo SG. Volumetric modulated arc radiotherapy of the whole larynx, followed by a single affected vocal cord, for T1a glottic cancer: Dosimetric analysis of a case. Mol Clin Oncol 2016; 4:429-432. [PMID: 26998298 DOI: 10.3892/mco.2016.732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 12/03/2015] [Indexed: 11/05/2022] Open
Abstract
Radiation therapy (RT) and endolaryngeal surgery are standard treatments for early-stage glottic cancer. They have closely matched oncological outcomes; however, it is debatable which method is superior in terms of functional outcomes. Several dosimetric studies have demonstrated that, compared with conventional RT, intensity-modulated RT (IMRT) reduces unnecessary radiation of the adjacent normal tissues, including the carotid artery and thyroid gland. However, RT targets the whole larynx, whereas endolaryngeal surgery is a highly focused treatment involving the en bloc resection of a tumor with safety margins. For T1a glottic cancer, in which the tumor is limited to one vocal cord, the technical feasibility of targeting IMRT on the single vocal cord affected has been investigated; however, the clinical feasibility and the possibility of inferior local control remain to be elucidated. In the present case study, IMRT was used to treat the whole larynx first, and then to treat a single vocal cord. The patient in the present study had T1a glottic cancer, and received volumetric modulated arc therapy with a total dose of 63 Gy/28 fractions. The first treatment phase (40.5 Gy/18 fractions) targeted the whole larynx to eliminate subclinical disease. The second treatment phase (22.5 Gy/10 fractions) targeted only the involved vocal cord. During this treatment phase, the exposure of the non-involved right vocal cord, the right carotid artery and the thyroid gland to the radiation was lower compared with the continuation of the initial treatment approach. These findings suggested that changing the target volume from the whole larynx to the affected vocal cord during the course of IMRT is feasible for T1a glottic cancer, and that it may reduce functional side effects while maintaining oncological outcomes.
Collapse
Affiliation(s)
- Seung-Gu Yeo
- Department of Radiation Oncology, Soonchunhyang University College of Medicine, Soonchunhyang University Hospital, Cheonan, Chungnam 330-721, Republic of Korea
| |
Collapse
|