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[The thyroid gland and the breast]
Zeitschrift Fur Lymphologie. Journal of Lymphology
|July 1, 1988
Summary
Contradictory findings link thyroid function and breast disease. Two proposed mechanisms involve thyroid hormones affecting prolactin sensitivity and sex hormone metabolism, suggesting further research is needed.
Area of Science:
- Endocrinology
- Oncology
Context:
- The relationship between thyroid disorders and breast diseases is complex and marked by conflicting research findings.
- Existing studies, spanning from 1896 to the present, present methodological challenges and heterogeneous data.
- Understanding this connection is crucial for both thyroid and breast health research.
Purpose:
- To critically examine existing studies on the thyroid-breast disease connection.
- To elucidate potential pathophysiological mechanisms linking thyroid function and breast pathologies.
- To propose a two-track approach for future research.
Summary:
- Two primary mechanisms are discussed: 1) Low thyroid hormone levels may increase breast sensitivity to prolactin, potentially leading to dysplasia or neoplasia. 2) Thyroid hormones influence sex hormone metabolism; hyperthyroidism can alter sex hormone effects, while iodine deficiency may promote neoplastic changes via hyperestrogenism.
- The neurohumoral regulation of thyrotropic and lactotropic cells in the anterior pituitary is noted as a shared pathway.
- Proposed research includes thyroid receptor assays on tumor tissue and large-scale prospective clinical studies.
Impact:
- Provides a framework for understanding the intricate relationship between thyroid health and breast disease.
- Highlights the need for standardized research methodologies and further investigation.
- Aims to clarify the etiology of breast diseases in relation to thyroid dysfunction, potentially informing clinical practice and prevention strategies.