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From Medicineworld.org: Increased risk of breast cancer in long-term survivors of Hodgkin's disease

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Increased risk of breast cancer in long-term survivors of Hodgkin's disease


Women who had treatment for Hodgkin lymphoma with chest radiation therapy have a high cumulative absolute risk of developing breast cancer later in life. The risk of development of breast cancer increases with age at end of follow-up, time since diagnosis, and radiation dose. These findings are from a study published in the recent issue of Journal of the National Cancer Institute.

Hodgkin's disease use to be a uniformly fatal disease, but now more are more patients are long term survivors of Hodgkin's disease thanks to the advances in the treatment. This markedly increases the number of women who are at increased risk of developing breast cancer from the past radiation. Second primary cancers are the leading cause of death among long-term survivors, and breast cancer is the most common secondary cancer in female Hodgkin lymphoma survivors.

To estimate the future cumulative absolute risk of breast cancer for young women treated for Hodgkin lymphoma, Lois B. Travis, M.D., of the National Cancer Institute, and his colleagues analyzed data from a case-control study within an international population-based cohort of 3,817 female 1-year survivors of Hodgkin lymphoma who had been diagnosed at age 30 or younger between 1965 and 1994.

The cumulative absolute risk of developing breast cancer increased with age at end of follow-up, time since diagnosis, and radiation dose. For example, a woman who was treated for Hodgkin lymphoma at age 20 with a chest radiation dose of at least 40 Gy without alkylating agents would have a 0.4% risk of developing breast cancer by age 30, a 4.9% risk by age 40, and a 19.1% risk by age 50. By comparison, for white women in the general population, the absolute risks of breast cancer from age 20 to ages 30, 40, and 50 are, respectively, 0.04%, 0.5%, and 2.0%.

"However, it should always be noted that the gains in long-term survival provided by successful radiotherapy and chemotherapy outweigh the associated risks of breast cancer and other late sequelae. Moreover, current modifications in treatment will likely result in lower risks of breast cancer in the future," the authors write.

In an editorial, Dan L. Longo, M.D., of the National Institute on Aging, questions the continued routine use of radiation therapy for the treatment of Hodgkin disease when alternative approaches, such as combination chemotherapy alone, have similar success in curing the disease without the magnitude of late fatal complications. "We need to stop exposing women to the risk of subsequent breast cancer (and other malignancies and heart disease) by needlessly using radiation therapy as a component of their Hodgkin disease treatment," he writes. "A Pyrrhic victory in the absence of reasonable alternative ways to accomplish the goal can be tragic but necessary; a Pyrrhic victory that could be avoided while still accomplishing the goal is just foolish.".


Did you know?
Women who had treatment for Hodgkin lymphoma with chest radiation therapy have a high cumulative absolute risk of developing breast cancer later in life. The risk of development of breast cancer increases with age at end of follow-up, time since diagnosis, and radiation dose. These findings are from a study published in the recent issue of Journal of the National Cancer Institute.

Medicineworld.org: Increased risk of breast cancer in long-term survivors of Hodgkin's disease

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