## Abstract The relationship between socioโeconomic indicators, body mass, reproductive and menstrual factors and risk of โfamilialโ breast cancer has been analyzed using data from a large caseโcontrol study of breast cancer conducted in Italy. A total of 3,037 breastโcancer patients aged 75 years
Reproductive history and cancer of the biliary tract in women
โ Scribed by Clara J. Moerman; Mary P. H. Berns; H. Bas Bueno de Messqita; Sytske Runia
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- French
- Weight
- 840 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0020-7136
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โฆ Synopsis
Abstract
Although reproductive factors have been shown to be related to the composition of bile and functioning of the biliary system, their relationship with biliary tract cancer has not been studied in detail. Between 1984 and 1987 we conducted a caseโcontrol study of 75 women with cancer of the biliary tract and 252 controls from the general population. An interviewerโadministered questionnaire was used to collect information on reproductive history. The information was obtained from the responders themselves (direct response) or from relatives (indirect response). Our results indicate that younger age at menarche, early age at first pregnancy, higher number of pregnancies and prolonged fertility may enhance the risk of cancer of the biliary tract. Overall, increased exposure to endogenous oestrogens and progesterone constitutes a higher risk. ยฉ 1994 WileyโLiss, Inc.
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