[Thyroid function and menopausal status in benign and malignant breast diseases]

Area of Science:

• Endocrinology
• Oncology
• Women's Health

Context:

• Thyroid hormone levels are crucial for overall health and may influence breast tissue.
• Previous research has explored the relationship between thyroid function and breast diseases, with varying results.
• Menopausal status can affect hormonal profiles and disease risk.

Purpose:

• To investigate thyroid function (T3, T4, FT3I, T3U, FT4I, TSH) in premenopausal and postmenopausal women with benign breast disease and primary breast cancer.
• To determine if thyroid hormone levels or TSH differ significantly based on menopausal status and breast condition.
• To explore potential links between thyroid dysfunction and breast tumorigenesis or benign breast lesions.

Summary:

• Thyroid function tests (T3, T4, FT3I, T3U, FT4I, TSH) were analyzed in premenopausal and postmenopausal women across healthy controls, benign breast disease, and primary breast cancer groups.
• No significant deviations in thyroid hormone levels were observed in benign or malignant breast lesions compared to controls, except for higher T3 in postmenopausal healthy controls.
• Premenopausal women, particularly those with primary breast cancer, exhibited significantly higher basal TSH levels.

Impact:

• Suggests that pathological variations in thyroid hormones and TSH may play a role in premenopausal mammary tumorigenesis.
• Indicates that a direct relationship between thyroid hormone instability and menopausal status in benign breast lesions was not identified in this study.
• Highlights the need for further research into the specific mechanisms linking thyroid function and breast cancer development, especially in premenopausal women.