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[Breast cancer epidemiology]
R Ravera1, E Medina, I M López
1Escuela de Salud Pública, Facultad de Medicina, Universidad de Chile, Santiago.
Revista Medica De Chile
|September 1, 1991
Summary
Chilean women with breast cancer showed higher rates of AB blood group and fewer pregnancies. Factors like menarche, menopause, breastfeeding, and oral contraceptive use were not linked to increased breast cancer risk.
Area of Science:
- Oncology
- Epidemiology
- Public Health
Background:
- Breast cancer is a significant health concern globally and in Chile.
- Identifying biological and social risk factors is crucial for prevention and early detection strategies.
Purpose of the Study:
- To investigate the frequency of biological and social factors associated with breast cancer in Chilean females.
- To compare these factors between breast cancer patients and a control group.
Main Methods:
- A comparative study involving 204 female breast cancer patients and 208 controls aged 40-65.
- Data collection focused on biological factors (e.g., blood group) and social/reproductive history.
Main Results:
- Breast cancer patients exhibited a higher prevalence of the AB blood group.
- Lower pregnancy rates and delayed first pregnancies were observed in the breast cancer group.
- No significant association was found between breast cancer and age at menarche/menopause, prolonged breastfeeding, oral contraceptive use, or nutritional status.
Conclusions:
- The AB blood group and reproductive patterns (fewer, later pregnancies) may be associated with breast cancer risk in Chilean women.
- Further research is recommended to explore other potential factors such as previous breast pathology, diabetes, and lifestyle choices.