Thyroid isthmusectomy: a critical appraisal

Area of Science:

• Endocrinology
• Surgical Oncology
• Thyroid Surgery

Background:

• Thyroid lobectomy with isthmusectomy is standard for unilateral nodules, exposing tracheoesophageal grooves.
• Thyroid isthmusectomy removes only the thyroid isthmus, avoiding groove exposure.

Purpose of the Study:

• To evaluate thyroid isthmusectomy as a safe alternative to lobectomy for specific thyroid nodules.
• To assess the safety and efficacy of isthmusectomy for isthmus or pyramidal lobe lesions.

Main Methods:

• Prospective study (1999-2004) including patients with single isthmus/pyramidal lobe lesions (≤30mm).
• Inclusion criteria: non-diagnostic, follicular, or suspicious cytology.
• Nine patients met criteria for thyroid isthmusectomy.

Main Results:

• Histology revealed colloid nodules, benign follicular adenomas, Hurthle cell adenomas, and papillary thyroid carcinomas.
• No complications were recorded during the study period.
• Thyroid isthmusectomy proved safe for selected patients.

Conclusions:

• Thyroid isthmusectomy is a safe alternative to thyroid lobectomy with isthmusectomy for nodules in the isthmus/pyramidal lobe.
• Preserving thyroid tissue minimizes risks to recurrent laryngeal nerves and parathyroids.
• Surgeons require experience in complex thyroid procedures for optimal isthmusectomy outcomes.