Clinical assessment of neck dissection for cN0 papillary thyroid microcarcinoma / 中华内分泌外科杂志

ABSTRACT

Objective To study the rule of lymph node metastasis rate in cN 0 papillary thyroid microcar-cinoma( cN0-PTMC) and to evaluate an appropriate region of neck dissection .Methods Data of 233 cases of cN0-PTMC were retrospectively analyzed .Univariate analysis with chi-square test was used to analyze the statisti-cal correlation between gender , age, tumor diameter and lymph node metastasis respectively .Results 81 out of 233 patients(34.8%)had cervical lymph node metastasis (30.0%in central region and 9.9%in lateral region). For patients with tumor diameter ( D)≤5 mm and D>5 mm, lymph node metastasis rate in central region was 21.6%and 36.6%(χ2 =6.199,P45 years old was 37.9% and 21.1% respectively (χ2 =7.792, P 5 mm should receive the lateral neck lymphoid tissue exploration during surgery in order to find subclinical metas -tasis.