Mammographic Density and Breast Cancer After Ductal Carcinoma In Situ
| Autor: | Stephanie R. Land, Laurel A. Habel, James J. Dignam, Angela M. Capra, Thomas B. Julian, Martine Salane |
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| Rok vydání: | 2004 |
| Předmět: |
Adult
Oncology Cancer Research medicine.medical_specialty medicine.medical_treatment Breast Neoplasms Risk Assessment Article Breast cancer Risk Factors Internal medicine Carcinoma Humans Medicine Mammography Single-Blind Method Breast Risk factor skin and connective tissue diseases Aged Proportional Hazards Models Randomized Controlled Trials as Topic Gynecology medicine.diagnostic_test business.industry Incidence Carcinoma in situ Cancer Confounding Factors Epidemiologic Middle Aged Ductal carcinoma medicine.disease United States Radiation therapy Carcinoma Intraductal Noninfiltrating Female Neoplasm Recurrence Local business |
| Zdroj: | JNCI Journal of the National Cancer Institute. 96:1467-1472 |
| ISSN: | 1460-2105 0027-8874 |
| DOI: | 10.1093/jnci/djh260 |
| Popis: | Women with ductal carcinoma in situ (DCIS) are at substantially increased risk for a second breast cancer, but few strong predictors for these subsequent tumors have been identified. We used Cox regression modeling to examine the association between mammographic density at diagnosis of DCIS of 504 women from the National Surgical Adjuvant Breast and Bowel Project B-17 trial and risk of subsequent breast cancer events. In this group of patients, mostly 50 years old or older, approximately 6.6% had breasts categorized as highly dense (i.e., > or =75% of the breast occupied by dense tissue). After adjusting for treatment with radiotherapy, age, and body mass index, women with highly dense breasts had 2.8 (95% confidence interval [CI] = 1.3 to 6.1) times the risk of subsequent breast cancer (DCIS or invasive), 3.2 (95% CI = 1.2 to 8.5) times the risk of invasive breast cancer, and 3.0 (95% CI = 1.2 to 7.5) times the risk of any ipsilateral breast cancer, compared with women with less than 25% of the breast occupied by dense tissue. Our results provide initial evidence that the risk of second breast cancers may be increased among DCIS patients with highly dense breasts. |
| Databáze: | OpenAIRE |
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