Radiation for ETMR: Literature review and case series of patients treated with proton therapy
| Autor: | Canan Akyüz, Susan L. McGovern, Nancy Philip, Ali Varan, Mary Frances McAleer, Sergio Jaramillo, David R. Grosshans, Anita Mahajan |
|---|---|
| Přispěvatelé: | Çocuk Sağlığı ve Hastalıkları |
| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment R895-920 Medulloepithelioma Article Craniospinal Irradiation 030218 nuclear medicine & medical imaging Medical physics. Medical radiology. Nuclear medicine 03 medical and health sciences 0302 clinical medicine medicine Initial treatment Radiology Nuclear Medicine and imaging Proton therapy RC254-282 Pediatric Series (stratigraphy) Radiation business.industry Disease progression Neoplasms. Tumors. Oncology. Including cancer and carcinogens medicine.disease ETMR Radiation therapy Oncology 030220 oncology & carcinogenesis ETANTR Ependymoblastoma Proton Radiology business |
| Zdroj: | Clinical and Translational Radiation Oncology Clinical and Translational Radiation Oncology, Vol 15, Iss, Pp 31-37 (2019) |
| ISSN: | 2405-6308 |
| DOI: | 10.1016/j.ctro.2018.11.002 |
| Popis: | Highlights • ETMRs are rare but highly aggressive tumors occurring in young children. • The role of radiation in the treatment of ETMRs is poorly defined. • Of 18 long term (>36 months) survivors in the literature, 17 received radiation. • Of 7 patients treated with proton therapy, three survived 36 months or longer. Background and purpose Embryonal tumors with multilayered rosettes (ETMRs) are aggressive tumors that typically occur in young children. Radiation is often deferred or delayed for these patients due to late effects; proton therapy may mitigate some of these concerns. This study reviews the role of radiation in ETMR and describes initial results with proton therapy. Materials and methods Records of patients with embryonal tumor with abundant neuropil and true rosettes (ETANTR), medulloepithelioma (MEP), and ependymoblastoma (EPL) treated with proton therapy at our institution were retrospectively reviewed. A literature review of cases of CNS ETANTR, MEP, and EPL published since 1990 was also conducted. Results Seven patients were treated with proton therapy. Their median age at diagnosis was 33 months (range 10–57 months) and their median age at radiation start was 42 months (range 17–58 months). Their median overall survival (OS) was 16 months (range 8–64 months), with three patients surviving 36 months or longer. Five patients had disease progression prior to starting radiation; all 5 of these patients failed in the tumor bed. A search of the literature identified 204 cases of ETMR with a median OS of 10 months (range 0.03–161 months). Median OS of 18 long-term survivors (≥36 months) in the literature was 77 months (range 37–184 months). Of these 18 long-term survivors, 17 (94%) received radiotherapy as part of their initial treatment; 14 of them were treated with craniospinal irradiation. Conclusions Outcomes of patients with ETMR treated with proton therapy are encouraging compared to historical results. Further study of this rare tumor is warranted to better define the role of radiotherapy. |
| Databáze: | OpenAIRE |
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