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Radiotherapy for inoperable Merkel cell carcinoma: a systematic review and pooled analysis

BACKGROUND: Cumulative data on radiation monotherapy for Merkel cell carcinoma (MCC) is lacking. OBJECTIVE: We sought to synthesize all available data on treatment outcomes for radiation monotherapy for inoperable stage I–III MCC. METHODS: We performed a systematic review of the current literature....

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Detalles Bibliográficos
Autores principales: Patel, Parth, Modi, Chirag, McLellan, Beth, Ohri, Nitin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Derm101.com 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5955084/
https://www.ncbi.nlm.nih.gov/pubmed/29785334
http://dx.doi.org/10.5826/dpc.0802a15
Descripción
Sumario:BACKGROUND: Cumulative data on radiation monotherapy for Merkel cell carcinoma (MCC) is lacking. OBJECTIVE: We sought to synthesize all available data on treatment outcomes for radiation monotherapy for inoperable stage I–III MCC. METHODS: We performed a systematic review of the current literature. Articles published in English in the PubMed database up to July 29, 2016, were evaluated. RESULTS: Eight case reports, 4 case series, and 6 retrospective studies, yielding 68 patients, were included in our analysis. Of the 24 stage I/II patients treated with local irradiation, 6 (25%) relapsed and 1 (4%) died from MCC. Of the 24 stage I/II patients treated with local and regional nodal irradiation, 5 (21%) relapsed and 2 (8%) died from MCC. Of the 20 stage III patients treated with local and regional nodal irradiation, 12 (60%) relapsed and 7 (35%) died from MCC. CONCLUSIONS: Radiation monotherapy appears to be a reasonable treatment modality for patients with inoperable stage I–III MCC. Further investigation with prospective studies is needed to draw definitive conclusions.