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Breast Cancer Risk After Supradiaphragmatic Radiotherapy for Hodgkin's Lymphoma in England and Wales: A National Cohort Study

Lookup NU author(s): Dr Helen Lucraft

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Abstract

PurposeTo investigate breast cancer risk after supradiaphragmatic radiotherapy administered to young women with Hodgkin's lymphoma (HL) in a much larger cohort than previously to provide data for patient follow-up and screening individualized according to treatment type, age, and time point during follow-up.Patients and MethodsBreast cancer risk was assessed in 5,002 women in England and Wales treated for HL with supradiaphragmatic radiotherapy at age < 36 years from 1956 to 2003, who underwent follow-up with 97% completeness until December 31, 2008.ResultsBreast cancer or ductal carcinoma in situ developed in 373 patients, with a standardized incidence ratio (SIR) of 5.0 (95% CI, 4.5 to 5.5). SIRs were greatest for those treated at age 14 years (47.2; 95% CI, 28.0 to 79.8) and continued to remain high for at least 40 years. The maximum absolute excess risk was at attained ages 50 to 59 years. Alkylating chemotherapy or pelvic radiotherapy diminished the risk, but only for women treated at age >= 20 years, not for those treated when younger. Cumulative risks were tabulated in detail; for 40-year follow-up, the risk for patients receiving >= 40 Gy mantle radiotherapy at young ages was 48%.ConclusionThis article provides individualized risk estimates based on large numbers for patients with HL undergoing follow-up after radiotherapy at young ages. Follow-up of such women needs to continue for 40 years or longer and may require more-intensive screening regimens than those in national general population programs. Special consideration is needed of potential measures to reduce breast cancer risk for girls treated with supradiaphragmatic radiotherapy at pubertal ages.


Publication metadata

Author(s): Swerdlow AJ, Cooke R, Bates A, Cunningham D, Falk SJ, Gilson D, Hancock BW, Harris SJ, Horwich A, Hoskin PJ, Linch DC, Lister TA, Lucraft HH, Radford JA, Stevens AM, Syndikus I, Williams MV

Publication type: Article

Publication status: Published

Journal: Journal of Clinical Oncology

Year: 2012

Volume: 30

Issue: 22

Pages: 2745-2752

Print publication date: 25/06/2012

ISSN (print): 0732-183X

ISSN (electronic): 1527-7755

Publisher: American Society of Clinical Oncology

URL: http://dx.doi.org/10.1200/JCO.2011.38.8835

DOI: 10.1200/JCO.2011.38.8835


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