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Related Concept Videos

The Thyroid Gland01:23

The Thyroid Gland

The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...

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Related Experiment Video

Updated: Jun 16, 2026

"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach
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"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

Published on: November 28, 2025

Is thymectomy worthwhile in central lymph node dissection for differentiated thyroid cancer?

Ziad El Khatib1, Julie Lamblin, Sebastien Aubert

  • 1Department of General and Endocrine Surgery, Hopital Huriez CHU, Lille Cedex, 59037, France.

World Journal of Surgery
|January 23, 2010
PubMed
Summary

Routine bilateral thymectomy during thyroid cancer surgery increases hypocalcemia risk without significant oncologic benefit. Unilateral thymectomy is recommended to minimize complications in differentiated thyroid cancer patients.

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Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma
04:01

Transoral Robotic Total Thyroidectomy and Bilateral Central Regional Lymph Node Dissection for Papillary Thyroid Carcinoma

Published on: September 15, 2023

Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Head and Neck Surgery

Background:

  • Current guidelines recommend central lymph node dissection (CLND) for differentiated thyroid cancer (DTC).
  • CLND, particularly with bilateral thymectomy, is associated with increased postoperative hypocalcemia.
  • Unilateral thymectomy is an alternative to minimize this complication.

Purpose of the Study:

  • To compare the risks and benefits of bilateral versus unilateral thymectomy during CLND for DTC.
  • To evaluate the incidence of thymic lymph node metastases versus postoperative hypocalcemia for each procedure.

Main Methods:

  • Retrospective review of 138 patients undergoing total thyroidectomy with CLND for DTC (2004-2007).
  • Patients were divided into two groups: bilateral thymectomy (n=45) and unilateral thymectomy (n=93).
  • Analysis included pathological examination for thymic metastases and assessment of postoperative hypocalcemia.

Main Results:

  • Thymic metastases were rare, found in only two cases (papillary cancer) in the bilateral thymectomy group.
  • Transient hypocalcemia was significantly more frequent in the bilateral thymectomy group (35.5%) compared to the unilateral group (10.7%) (P < 0.001).
  • One case of permanent hypocalcemia occurred in the bilateral thymectomy group.

Conclusions:

  • The risk of hypocalcemia associated with bilateral thymectomy outweighs the minimal oncologic benefit from detecting thymic metastases.
  • Routine bilateral thymectomy is not recommended in conjunction with CLND for differentiated thyroid cancer.
  • Unilateral thymectomy is a safer approach for managing differentiated thyroid cancer requiring CLND.