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Updated: Sep 23, 2025

Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
Published on: September 15, 2023
Changes in TSH, T4, T3 and Thyroglobulin Levels throughout Total Thyroidectomy
Nora Senese1, Jérôme R Lechien1,2,3, Kris Poppe4
1Department of Otolaryngology-Head & Neck surgery, CHU Saint Pierre, Université Libre de Bruxelles (ULB), 1000 Brussels, Belgium.
Total thyroidectomy temporarily alters thyroid hormone levels, with T4 and thyroglobulin increasing during surgery and all measured hormones decreasing afterward. These transient changes did not lead to clinical effects like thyrotoxicosis.
Area of Science:
- Endocrinology
- Surgical Oncology
- Thyroidology
Background:
- Assessing the impact of total thyroidectomy on thyroid function is crucial for patient management.
- Thyroid hormone levels can fluctuate during surgical procedures.
Purpose of the Study:
- To evaluate the perioperative changes in thyroid function following total thyroidectomy.
- To determine the clinical significance of these hormonal shifts.
Main Methods:
- Monocentric observational prospective study involving 77 patients undergoing total thyroidectomy.
- Perioperative blood sampling (pre-, intra-, and post-operative) to measure TSH, T4, T3, and thyroglobulin.
- Statistical analysis of hormonal changes and correlation with clinical outcomes.
Main Results:
- Significant increases in T4 and thyroglobulin from pre- to intra-operative stages (T0 to T1).
- Significant decreases in TSH, T4, T3, and thyroglobulin from intra- to post-operative stages (T1 to T2).
Conclusions:
- Thyroid hormone levels exhibit variable kinetics during thyroid gland manipulation in surgery.
- Despite observed hormonal fluctuations, no adverse clinical effects such as thyrotoxicosis were noted.
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