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Predictive factors for hypothyroidy after hemithyroidectomy.

Mohamed Amine Chaabouni1,2, Moncef Sellami1,2, Esma Jameleddine1,2

  • 1Department of Otorhinolaryngology Head and Neck Surgery, Habib Bourguiba University Hospital, Sfax, Tunisia.

F1000Research
|January 16, 2023
PubMed
Summary
This summary is machine-generated.

Post-hemithyroidectomy hypothyroidism affects over 30% of patients, often within the first year. Key risk factors include elevated preoperative TSH, small remaining thyroid lobe volume, and thyroiditis, necessitating careful monitoring.

Keywords:
Hypothyroidismhemithyroidectomyrisk factorsthyroiditis

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Area of Science:

  • Endocrinology
  • Surgical Oncology
  • Thyroid Surgery

Background:

  • Hemithyroidectomy is a common surgical procedure for benign unilateral thyroid nodules.
  • It aims to reduce risks of hypothyroidism and thyroid hormone replacement compared to total thyroidectomy.
  • Identifying predictors of biochemical hypothyroidism post-surgery is crucial for patient management.

Purpose of the Study:

  • To identify clinicopathologic risk factors associated with biochemical hypothyroidism after hemithyroidectomy.
  • To analyze patient data retrospectively to determine predictors of post-surgical hypothyroidism.

Main Methods:

  • Retrospective review of 214 patients undergoing hemithyroidectomy between 2004 and 2019.
  • Hypothyroidism defined as serum thyrotropin (TSH) > 5 mIU/L.
  • Analysis included age, sex, preoperative/postoperative TSH, remaining lobe volume, and histology.

Main Results:

  • 30.8% of patients developed hypothyroidism, with 83.3% of cases occurring within the first year.
  • Preoperative TSH > 1.32 mIU/L, remaining lobe volume < 3 ml, and thyroiditis significantly increased hypothyroidism risk (p<0.01).
  • No significant differences were found based on age, sex, or lobe laterality.

Conclusions:

  • Pre-operative assessment of hypothyroidism risk is essential for patients undergoing hemithyroidectomy.
  • Close monitoring is recommended for high-risk individuals, and all patients should be monitored for at least the first year post-surgery.