Prediction of central lymph node metastasis in cN0 stage papillary thyroid carcinoma
ZHANG Xuehe1, GAO Luying1, ZHAO Ruina1, HUANG Xuepei2, LIU Ruifeng1, SHI Xinlong1, XIA Yu1
1. Department of Ultrasound Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking University First Hospital, Beijing 100730, China; 2. Peking University First Hospital, Beijing 100034, China
Abstract:Objective To analyze the risk factors of central lymph node(CLN) metastasis in patients with cN0 stage papillary thyroid carcinoma(PTC).Methods: We retrospectively studied 570 patients with cN0 stage PTC who underwent bilateral CLN dissection in Peking Union Medical College Hospital from 2013 to 2015. CLN metastasis was identified by histopathology. Patients with different CLN metastasis statuses were compared according to clinical, sonographic and pathological parameters.Results The prevalence of CLN metastasis was 49.5% in cN0 patients with PTC. CLN metatasis was independent associated with Male(OR=1.787, 95% CI:1.066-2.997, P=0.028), <45 years old(OR=2.063, 95% CI:1.366-3.115, P=0.001), multifocal lesions (OR=1.764, 95% CI:1.134-2.743, P=0.012), tumor diameter(OR=1.844, 95% CI:1.201-2.831, P=0.005) >1 cm, microcalcification(OR=1.965, 95%,CI:1.296-2.979, P=0.001) and capsular invasion (OR=2.868, 95% CI:1.880-4.377, P=0.000) were independent risk factors.Conclusions The CLNM rates of PTC cN0 patients with the six factors (Male, <45 years old, multifocal lesions, tumor diameter>1 cm, microcalcification and capsular invasion) were relatively higher than those without. These findings may be useful for identifying patients at higher central lymph node metastasis risk, who may require more aggressive treatment or intensive follow-up management.
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