Breast cancer risk after radiotherapy in infancy: a pooled analysis of two Swedish cohorts of 17,202 infants

Breast cancer risk after radiotherapy in infancy : a pooled analysis of two Swedish cohorts of 17,202 infants

The incidence of breast cancer was studied in a cohort of 17,202 women irradiated for skin hemangioma in infancy at the Radiumhemmet, Stockholm, or the Sahlgrenska University Hospital, Gothenburg. A major part of the cohort had been treated with radium-226 applicators, and the mean absorbed dose to the breasts was 0.29 Gy (range <0.01-35.8 Gy). Two hundred forty-five breast cancers were diagnosed in the cohort during the period 1958-1993, and the standardized incidence ratio (SIR) was 1.20 (95% CI 1.06-1.36). Different dose-response models were tested, and a linear model gave the best fit. Neither age at exposure, breast dose rate, ovarian dose nor time since exposure had any statistically significant modifying effect, and breast dose was the only determinant of risk. The excess relative risk per gray (ERR/Gy) was 0.35 (95% CI 0.18-0.59), which is lower than in most other studies.

Mattsson, AndersRadiumhemmet, Karolinska Hospital, Stockholm (författare)
Karlsson, PerSahlgrenska University Hospital, Gothenburg (författare)
Holmberg, ErikSahlgrenska University Hospital, Gothenburg (författare)
Gustafsson, Agnetha,1960-Sahlgrenska University Hospital, Gothenburg(Swepub:liu)agngu51 (författare)
Holm, Lars-ErikSwedish Radiation Protection Institute, Solna (författare)
Karolinska InstitutetRadiumhemmet, Karolinska Hospital, Stockholm (creator_code:org_t)

Ingår i:Radiation Research: Radiation Research Society151:5, s. 626-6320033-75871938-5404

Av författaren/redakt...: Lundell, Marie; Mattsson, Anders; Karlsson, Per; Holmberg, Erik; Gustafsson, Agne ...; Holm, Lars-Erik

Om ämnet

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Hälsovetenskap; och Folkhälsovetensk ...

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