Outcomes among women younger than age 40 in a state breast cancer screening program.

Background: The value of entering women younger than age 40 in breast cancer screening programs (SPs) remains unclear.

Methods: Data from the Oregon Breast and Cervical Cancer Program (BCCP) for the period December 31, 2000 through July 1, 2003 were reviewed with a focus on women 39 years of age or younger. Information on cancers detected in this group was extracted from The Oregon State Cancer Registry.

Results: Of the 13,636 women screened, 797 (5.8%) were younger than 40 (mean age 31.9 years). A total of 20.6% of the women were asymptomatic and therefore represented true incidence screening, while 79.4% were referred to the program for symptoms (prevalence screen). A total of 125 biopsies were done out of 797 women, which yielded 5 cancers. All 5 of these patients were symptomatic at presentation and had a negative family history.

Conclusions: There are as yet no data in our state breast cancer SP to support screening of asymptomatic women younger than 40.