Risk factors for predicting central lymph node metastasis in papillary thyroid microcarcinoma

Area of Science:

• Endocrinology
• Oncology
• Surgical Pathology

Background:

• Papillary thyroid microcarcinoma (PTMC) presents unique challenges in predicting lymph node metastasis.
• Accurate prediction of central compartment lymph node metastasis (CLNM) is vital for appropriate patient management.

Purpose of the Study:

• To identify predictive factors for CLNM in patients with PTMC.
• To aid in the decision-making process for prophylactic central compartment lymph node dissection (CLND).

Main Methods:

• Retrospective analysis of PTMC patients treated at a single institution.
• Statistical analysis of clinicopathological factors including age, sex, tumor size, multifocality, and capsular invasion.

Main Results:

• Tumor size greater than 5 mm, bilateral tumor presentation, and capsule invasion were independently predictive of CLNM.
• Tumor location in the lower third of the thyroid lobe was associated with increased CLNM risk in solitary tumors.

Conclusions:

• Preoperative and intraoperative identification of risk factors like male gender, tumor size > 5 mm, bilateral/multifocal disease, lower third location, and capsule invasion can guide CLND decisions.
• These findings support tailored prophylactic CLND strategies for PTMC patients.