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KMID : 0361020220650080448
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Korean Journal of Otolaryngology - Head and Neck Surgery
2022 Volume.65 No. 8 p.448 ~ p.456
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Risk Factors for Local Recurrence in Patients With N1b Papillary Thyroid Carcinoma
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Lee Jung-Woo
Lee Gab-Kyun
Jang Ji-Won
Cheon Yong-Il
Shin Sung-Chan
Lee Jin-Choon
Kim Bo-Hyun
Kim In-Ju
Kim Choong-Rak
Lee Byung-Joo
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Abstract
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Background and Objectives Papillary thyroid carcinoma (PTC) with lateral neck lymphnode metastasis is known as a major risk factor for tumor recurrence after surgical treatment.
The aim of this study is to identify risk factors for loco-regional recurrence in patients withPTC with lateral neck lymph node metastasis, which has a high risk of recurrence.
Subjects and Method This study involved 319 patients who underwent total thyroidectomy,central lymph node (LN) and lateral LN dissection due to PTC. The patients’ demographicsand pathological factors, including lymph node metastasis were retrospectively reviewed.
Univariate, multivariate and C-index with variable selection analyses were performed to identifyfactors associated with recurrence-free survival (RFS).
Results A mean follow-up of 101 months, 35 (10.9%) patients had a loco-regional recurrence.
In multivariate analysis according to loco-regional recurrence, patients with a primary tumorof more than 4 cm, multifocality, vascular invasion, and bilateral lateral cervical metastasiswere associated with worse RFS. In the variable selection analysis, lateral lymph node metastasisratio was also statistically significant.
Conclusion PTC with lateral neck lymph node metastasis included tumors larger than 4 cm.
Multifocality, vascular invasion, high lateral lymph node metastasis ratio and bilateral necklymph node metastasis are predictive factors of loco-regional recurrence, and these risk factorsshould be carefully followed-up after surgery.
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KEYWORD
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Lymphatic metastasis, Prognosis, Recurrences, Risk factors, Thyroid neoplasm
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