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  • Title: Predictive factors for central compartment lymph node metastasis in thyroid papillary microcarcinoma.
    Author: Lee SH, Lee SS, Jin SM, Kim JH, Rho YS.
    Journal: Laryngoscope; 2008 Apr; 118(4):659-62. PubMed ID: 18176339.
    Abstract:
    OBJECTIVE: We examined the incidence of nodal involvement and attempted to determine the predictive factors for central compartment lymph node (LN) metastasis in thyroid papillary microcarcinoma (PMC). STUDY DESIGN: Retrospective chart review. METHODS: We undertook a retrospective study of 52 patients treated between January 2000 and December 2005 for PMC by total thyroidectomy and elective central compartment LN dissection with or without comprehensive lateral neck dissection (n = 9). There were 45 women and 7 men whose mean age was 47.6 +/- 11.5 years. The following criteria were used to study the predictive value of central compartment LN metastasis: sex, age, multifocality of the tumor, extracapsular spread (ECS), the involvement of the lateral neck LN, tumor size, and tumor location. RESULTS: In 16 of 52 (31%) patients, central compartment LN metastasis was found. With use of univariate and multivariate analysis, ECS, lateral LN metastasis, and tumor size (>5 mm) were independent correlates of central compartment metastasis. Sex, age, multifocality, and tumor location were not associated with central compartment LN metastasis and did not significantly influence the predictive value of these variables. CONCLUSIONS: We found a significant association among ECS, lateral LN metastasis, tumor size (>5 mm), and central compartment LN metastasis in patients with PMC. A prophylactic neck dissection of the central compartment should be considered particularly in patients with ECS of the tumors, metastatic LN in the lateral neck, and a greater than 5 mm tumor size.
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