Prognostic Factors and Recurrence in Papillary Thyroid Microcarcinoma

Area of Science:

• Endocrinology
• Oncology
• Pathology

Background:

• Papillary thyroid microcarcinoma (PTMC) is typically indolent but can display aggressive behavior.
• Accurate risk stratification is crucial for treatment de-escalation and active surveillance strategies.
• Understanding PTMC heterogeneity is key to personalized patient management.

Purpose of the Study:

• To evaluate recurrence rates in PTMC patients.
• To identify clinicopathological factors associated with PTMC recurrence.
• To determine predictors of lymph node metastasis (LNM) and assess management strategies.

Main Methods:

• Retrospective analysis of 302 PTMC patients.
• Statistical evaluation using chi-square, Spearman correlation, and logistic regression.
• Assessment of associations between clinicopathological variables and outcomes.

Main Results:

• Recurrence occurred in 1.3% of patients, associated with LNM, higher ATA risk, and positive margins.
• LNM was predicted by younger age, larger tumor size, and vascular invasion (p < 0.05).
• Autoimmune thyroiditis was linked to a reduced risk of LNM (p = 0.020).

Conclusions:

• PTMC exhibits clinically significant heterogeneity, especially in cases with LNM.
• Recurrence findings are preliminary due to a low event count, requiring cautious interpretation.
• Risk-adapted management and careful patient selection are supported for PTMC treatment de-escalation.