Prospective evaluation of multitarget treatment of pediatric patients with helical intensity-modulated radiotherapy.
Strahlenther. Onkol. 196, 1103–1115 (2020)
Background and purpose Radiotherapy (RT) is persistently gaining significance in the treatment of pediatric tumors. However, individual features of a growing body and multifocal stages complicate this approach. Tomotherapy offers advantages in the treatment of anatomically complex tumors with low risks of side effects. Here we report on toxicity incidence and outcome of tomotherapy with a focus on multitarget RT (mtRT). Materials and methods From 2008 to 2017, 38 children diagnosed with sarcoma were treated with tomotherapy. The median age was 15 years (6-19 years). Toxicity was graded according to the Common Terminology Criteria for Adverse Events v.4.03 and classified into symptoms during RT, acutely (0-6 months) and late (>6 months) after RT, and long-term sideeffects (>24 months). Results The main histologies were Ewing sarcoma (n & x202f;= 23 [61%]) and alveolar rhabdomyosarcoma (n & x202f;= 5 [13%]). RT was performed with a median total dose of 54 & x202f;Gy (40.5-66.0 & x202f;Gy) and a single dose of 2 & x202f;Gy (1.80-2.27 & x202f;Gy). Twenty patients (53%) received mtRT. Median follow-up was 29.7 months (95% confidence interval 15.3-48.2 months) with a 5-year survival of 55.2% (+/- 9.5%). The 5-year survival rate of patients with mtRT (n & x202f;= 20) was 37.1 & x202f;+/- 13.2%, while patients who received single-target RT (n & x202f;= 18) had a 5-year survival rate of 75 & x202f;+/- 10.8%. Severe toxicities (grade 3 and 4) emerged in 14 patients (70%) with mtRT and 7 patients (39%) with single-target RT. Two non-hematological grade 4 toxicities occurred during RT: one mucositis and one radiodermatitis. After mtRT 5 patients had grade 3 toxicities acute and after single-target RT 4 patients. One patient had acute non-hematological grade 4 toxicities (gastritis, pericarditis, and pericardial effusion) after mtRT. Severe late effects of RT occurred in 2 patients after mtRT and in none of the single-target RT patients. No severe long-term side effects appeared. Conclusion Our results showed acceptable levels of acute and late toxicities, considering the highly advanced diseases and multimodal treatment. Hence, tomotherapy is a feasible treatment method for young patients with anatomically complex tumors or multiple targets. Especially mtRT is a promising and innovative treatment approach for pediatric sarcomas, delivering unexpectedly high survival rates for patients with multifocal Ewing sarcomas in this study, whereby the limited number of patients should invariably be considered in the interpretation.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Tomotherapy ; Pediatric Sarcoma ; Toxicity ; Survival ; Multitarget Radiation Therapy; Radiation-therapy; Ewing Sarcoma; Intergroup Rhabdomyosarcoma; Prognostic-factors; Children; Chemotherapy; Tomotherapy; Childhood; Neoplasms; Outcomes
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2020
Prepublished im Jahr
HGF-Berichtsjahr
2020
ISSN (print) / ISBN
0179-7158
e-ISSN
1439-099X
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 196,
Heft: ,
Seiten: 1103–1115
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Urban & Vogel
Verlagsort
Tiergartenstrasse 17, D-69121 Heidelberg, Germany
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30203 - Molecular Targets and Therapies
Forschungsfeld(er)
Radiation Sciences
PSP-Element(e)
G-501300-001
Förderungen
Projekt DEAL
Copyright
Erfassungsdatum
2020-10-08