Related Experiment Videos
Hormonal factors in vulvar cancer. A case-control study
K J Sherman1, J R Daling, B McKnight
1Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98104.
The Journal of Reproductive Medicine
|November 1, 1994
Summary
Vulvar cancer risk factors were explored. Early menarche, excess weight, and late first pregnancy showed slight associations, but vulvar cancers appear not strongly hormone-dependent.
Area of Science:
- Oncology
- Epidemiology
- Gynecology
Background:
- Vulvar cancer etiology is not fully understood.
- Potential roles of reproductive and hormonal factors require investigation.
Purpose of the Study:
- To investigate the association between reproductive history, menstrual history, exogenous estrogen use, body mass, and vulvar cancer risk.
- To determine if vulvar cancers are hormone-dependent.
Main Methods:
- Case-control study comparing 330 vulvar cancer patients with 1,010 population controls.
- Interviews collected data on reproductive history, menstrual history, and lifestyle factors.
- Statistical analysis using odds ratios (OR) and confidence intervals (CI) evaluated risk factors.
Main Results:
- No significant differences found in age at menopause, parity, or non-contraceptive estrogen use.
- Increased risk associated with menarche before age 12 (OR=1.8 for in situ cancer).
- Excess body weight (highest tertile Quetelet's index) linked to invasive vulvar cancer (OR=2.9).
- First pregnancy after age 24 associated with in situ vulvar cancer (OR=1.5).
Conclusions:
- Vulvar cancer development may be influenced by early menarche, obesity, and late first pregnancy.
- Findings suggest that in situ and invasive vulvar cancers are not strongly hormone-dependent.