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Incidental and nonincidental papillary thyroid microcarcinoma
Jen-Der Lin1, Sheng-Fong Kuo, Tzu-Chieh Chao
1Department of Internal Medicine, CDivision of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Chang Gung University, 5 Fu-Shin St Kweishan County, Taoyuan Hsien, Taiwan, ROC. einjd@adm.cgmh.org.tw
Annals of Surgical Oncology
|May 17, 2008
Summary
For incidental papillary thyroid microcarcinoma (PTMC), less aggressive surgery is sufficient. Nonincidental PTMC requires aggressive surgical treatment and radioactive iodide (131I) therapy to reduce recurrence and mortality risks.
Area of Science:
- Endocrinology
- Surgical Oncology
- Oncology
Background:
- Papillary thyroid microcarcinoma (PTMC) management varies based on incidental vs. nonincidental diagnosis.
- Radioactive iodide ((131)I) therapy is a key consideration in PTMC treatment protocols.
Purpose of the Study:
- To evaluate the effectiveness of different surgical approaches for incidental and nonincidental PTMC.
- To determine optimal postoperative treatment strategies for PTMC based on disease characteristics.
Main Methods:
- Retrospective analysis of 335 PTMC patients.
- Classification of patients into incidental (Group I) and nonincidental (Group II) categories.
- Subgrouping of nonincidental PTMC based on tumor extent (intrathyroid, regional invasion, distant metastasis).
Main Results:
- Incidental PTMC (Group I) patients treated with subtotal thyroidectomy or lobectomy had no cancer-related deaths.
- Nonincidental PTMC (Group II) showed higher rates of multicentricity (24.9%) and extrathyroidal involvement (26.3%).
- Relapse rates were significantly higher in Group II (20 cases) compared to Group I (2 cases), with mortality observed in advanced nonincidental cases.
Conclusions:
- Subtotal thyroidectomy or lobectomy is adequate for incidental PTMC.
- Aggressive surgical treatment combined with (131)I therapy is crucial for nonincidental PTMC to minimize relapse and mortality.
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