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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2004-8-3
pubmed:abstractText
The objective of this study was to assess the role of various clinical and treatment factors involved in the long-term incidence of nonocular second primary tumors following retinoblastoma. The study was based on 111 patients treated between 1963 and 1977 according to the same radiotherapy protocol (electron beam radiotherapy) alone or in combination with triethylene melamine (TEM). Various statistical methods were used to obtain the actuarial survival curve, the cumulative incidence of second primary tumors, and comparisons of patient groups and subgroups. The 5-, 10-, 20-, and 30-year survival rates were 75%, 70%, 63%, and 55% with a follow-up of 23 to 35 years. The study reports the various parameters concerning 111 children and 17 second primary tumors: sex, age at treatment, histology of the retinoblastoma and second primary tumors, site of second tumors (anatomic and compared with irradiation field), radiation dose, time to onset, and chemotherapy with or without TEM. The results are discussed and compared with the data reported in the literature. Electron beam radiotherapy at a dose of 45 Gy does not eliminate the risk of nonocular second primary tumors. TEM also does not modify survival or the overall incidence of second primary tumors, but significantly increases the risk of second primary tumors outside the irradiation field.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1537-453X
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
411-9
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Nonocular second primary tumors after retinoblastoma: retrospective study of 111 patients treated by electron beam radiotherapy with or without TEM.
pubmed:affiliation
Department of Radiotherapy, Institut Curie, Section Médicale et Hospitalière, Paris, France.
pubmed:publicationType
Journal Article