Related Experiment Videos
Assessing the effects of thyroid suppression on benign solitary thyroid nodules. A model for using quantitative
1Clinical Pathology Department, Clin. Ctr., NIH, Bethesda, MD 20892-1508, USA. gcsako@nih.gov
Abstract:
Systematic review of the available information with a modified, largely quantitative method of research synthesis disclosed that an initial trial of thyroid hormone suppression therapy leads to clinically significant (> or = 50%) reduction of nodule size or arrest of nodule growth in a subset of patients with benign solitary thyroid nodules. In fact, in addition to objective improvements due to decreasing nodule size, L-T4 suppression therapy may benefit patients by reducing perinodular thyroid volume. Consequently, both pressure symptoms and cosmetic complaints may improve (9, 68). Additional studies for the assessment of the risks versus benefits of supraphysiologic doses of L-T4, the optimal level of thyroid suppression and the dose needed to achieve this magnitude of reduction, the optimal length of the initial trial, and the conditions for the continuation of L-T4 thyroid suppression therapy, as well as the identification of markers for patients most likely to respond to this therapy, are warranted. Finally, quantitative assessment of available evidence as described here may be applicable to the review of other controversial issues as well.
Insights
Thyroid hormone suppression therapy can reduce benign solitary thyroid nodule size or stop growth in some patients. This treatment may also alleviate pressure and cosmetic issues by decreasing nodule and surrounding thyroid volume.
Area of Science:
- Endocrinology
- Oncology
Background:
- Benign solitary thyroid nodules are common and can cause symptoms.
- Thyroid hormone suppression therapy is a potential treatment option.
Purpose of the Study:
- To evaluate the efficacy of thyroid hormone suppression therapy for benign solitary thyroid nodules.
- To assess the impact of therapy on nodule size and related symptoms.
Main Methods:
- Systematic review of available information.
- Modified, largely quantitative research synthesis.
Main Results:
- Initial trials show clinically significant reduction or arrest of nodule growth in a subset of patients.
- Therapy may reduce perinodular thyroid volume, improving pressure and cosmetic symptoms.
Conclusions:
- Thyroid hormone suppression therapy is a viable option for some patients with benign solitary thyroid nodules.
- Further research is needed to optimize treatment, assess risks/benefits, and identify responders.