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Br J Cancer. 2012 Oct 23;107(9):1451-3. doi: 10.1038/bjc.2012.438. Epub 2012 Sep 25.

Breast cancer and ductal carcinoma in situ among women with prior squamous or glandular precancer in the cervix: a register-based study.

Author information

1
Department of Research, Cancer Registry of Norway, PO Box 5313 Majorstuen, Oslo 0304, Norway. bo.terning.hansen@kreftregisteret.no

Abstract

BACKGROUND:

Human papillomavirus and hormonal contraceptives may be risk factors for cervical precancer and malignant breast tumours.

METHODS:

Standardised incidence ratios (SIRs) of malignant breast tumours during 1970-2008 were estimated separately for women with prior squamous and glandular cervical precancer.

RESULTS:

Women with squamous precancer and women with glandular precancer in the cervix had a significantly higher risk of malignant breast tumours than the general female population (SIR, 95% confidence interval: 1.10, 1.05-1.14 and 1.52, 1.11-2.08, respectively).

INTERPRETATION:

Shared risk factors or screening attendance may explain the excess risk of malignant breast tumours among women with a history of cervical precancer.

PMID:
23011481
PMCID:
PMC3493773
DOI:
10.1038/bjc.2012.438
[Indexed for MEDLINE]
Free PMC Article

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