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  • Title: Breast cancer histology in Caucasians, African Americans, Hispanics, Asians, and Pacific Islanders.
    Author: Klonoff-Cohen HS, Schaffroth LB, Edelstein SL, Molgaard C, Saltzstein SL.
    Journal: Ethn Health; 1998 Aug; 3(3):189-98. PubMed ID: 9798117.
    Abstract:
    STUDY OBJECTIVES: To investigate the association between race/ethnicity and histologic types of breast cancer. DESIGN: Cross-sectional study. SETTING: Population-based data from the Northern California Tumor Registry, which is part of the National Cancer Institute's Surveillance, Epidemiology and End Results Program. PARTICIPANTS: A total of 2759 breast cancer cases diagnosed in 1988. MAIN RESULTS: Tumors were classified as ductal, lobular, and mixed/unspecified carcinoma. Ductal carcinoma was the most common (83.6%) and lobular carcinoma was the rarest. Most cases were diagnosed in the localized stage (56.3%). Caucasian women had the highest rates of total breast cancer (240.9/100,000), ductal and lobular. In African-American women, the odds of ductal carcinoma were twice that of lobular carcinoma, compared with Caucasian women (odds ratio [OR] = 2.0, 95% confidence interval [CI] 1.0-3.9) after adjusting for age, site, and stage at diagnosis. Similarly, Asian and Hispanic women also had higher, non-statistically significant odds of ductal versus lobular carcinoma compared with Caucasians (OR = 1.8 [95% CI 0.9-3.7] and 1.6 [95% CI 0.8-3.4], respectively). CONCLUSIONS: Future studies should investigate how racial/ethnic differences in histology among breast cancer patients will influence life expectancy, against a backdrop of health care access, sociocultural issues, lifestyle habits, reproductive history, family history, and tumor characteristics.
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