Partial Thyroidectomy for Papillary Thyroid Microcarcinoma: Is Completion Total Thyroidectomy Indicated?

Area of Science:

• Endocrinology
• Surgical Oncology
• Thyroid Disease Management

Background:

• Papillary thyroid cancer (PTC) management often involves total thyroidectomy.
• Optimal surgical approach for papillary microcarcinoma remains debated, with both total thyroidectomy and lobectomy utilized.
• This study reports institutional experience with thyroid microcarcinoma treatment.

Purpose of the Study:

• To evaluate the efficacy and safety of lobectomy versus total thyroidectomy for papillary microcarcinoma.
• To compare recurrence rates and complication profiles between the two surgical approaches.
• To determine the necessity of routine completion thyroidectomy.

Main Methods:

• Retrospective analysis of 880 patients undergoing thyroid surgery for PTC between 1991-2015.
• Patients grouped into total thyroidectomy (Group 1, n=756) or lobectomy (Group 2, n=124).
• Outcomes analyzed: recurrence, reoperation, transient vocal cord paralysis, and hypocalcemia.

Main Results:

• Micro PTC (<10 mm) found in 251 (Group 1) and 69 (Group 2) specimens.
• Recurrence rate for lobectomy (Group 2) was 7.3% (12/164), with 5 cases of contralateral papillary carcinoma.
• Lobectomy group had significantly lower rates of transient hypoparathyroidism (0% vs. 18.6%, p < 0.0001) and similar transient nerve palsy rates compared to total thyroidectomy.

Conclusions:

• Thyroid lobectomy is an effective surgical strategy for papillary microcarcinomas, associated with low complication rates.
• Routine completion thyroidectomy is not mandatory for all patients.
• Careful selection of high-risk patients is crucial for optimal outcomes in microcarcinoma management.