Thyroid microcarcinoma approach: a ten year experience.

Area of Science:

• Endocrinology
• Surgical Oncology
• Oncology

Background:

• Thyroid microcarcinoma, defined as a tumor ≤1 cm, presents diagnostic and therapeutic challenges.
• While often indolent, microcarcinoma can exhibit nodal metastasis, complicating management strategies.
• Current literature reflects ongoing debate regarding the optimal surgical and adjuvant treatment for thyroid microcarcinoma.

Purpose of the Study:

• To optimize the management approach for thyroid microcarcinoma.
• To evaluate the authors' experience and review existing literature on thyroid microcarcinoma treatment.
• To compare outcomes based on lymph node metastasis status.

Main Methods:

• Retrospective analysis of 104 patients with thyroid microcarcinoma diagnosed between 2001-2011.
• Patient data included diagnosis timing (pre-operative vs. post-operative), lymph node metastasis (N+ vs. N0), and surgical procedures (thyroidectomy, lymphoadenectomy).
• All patients received Levo-thyroxine therapy; 131I ablation was administered in select cases.

Main Results:

• No recurrences or deaths were observed during a mean follow-up of 5.6 years.
• Multifocal tumors and nodal involvement (N+) were more frequent in patients with lymph node metastasis.
• Surgical interventions ranged from lobectomy to total thyroidectomy with lymphoadenectomy.

Conclusions:

• Thyroid microcarcinoma generally follows an indolent course but requires careful consideration due to potential nodal metastasis.
• Proposed management includes total thyroidectomy for pre-operative diagnosis without metastasis, and total thyroidectomy with lymphoadenectomy for cases with metastasis.
• Post-operative diagnosis may require completion thyroidectomy in select cases; Levo-thyroxine therapy is recommended for all, with 131I ablation reserved for specific metastatic or high-risk cases.