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Hu A, Tian J, Deng X, Wang Z, Li Y, Wang J, Liu L, Li Q. The diagnosis and management of small and indeterminate lymph nodes in papillary thyroid cancer: preoperatively and intraoperatively. Front Endocrinol (Lausanne) 2024; 15:1484838. [PMID: 39610843 PMCID: PMC11602296 DOI: 10.3389/fendo.2024.1484838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2024] [Accepted: 10/29/2024] [Indexed: 11/30/2024] Open
Abstract
Although thyroid cancer is an indolent tumor with a favorable prognosis, lymph node metastasis (LNM) serves as a major concern for many patients. Because LNM is strongly correlated with recurrence, distant metastasis, and shortened survival, a precise and timely diagnosis and following appropriate management for LNM are necessary. However, significant challenges still exist in the diagnosis of small LNs (<1 cm in diameter), and their low volume makes it difficult to determine whether they are metastatic or benign. Therefore, the diagnostic technique for these small and indeterminate LNs (siLNs) has been one of the leading research subjects in recent years. The implementation of innovative technologies, such as contrast-enhanced ultrasonography, frozen section, and molecular detection, has brought great progress to the diagnosis of siLNs. Meanwhile, the strategies for managing siLNs in clinical practice have evolved considerably over the past several years, with several appropriate options recommended by guidelines. In this review, we aim to provide a systematic overview of the latest studies and potential evidence about effective approaches for detecting and evaluating siLNs. Furthermore, the following management modalities of siLNs in different situations are well discussed.
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Affiliation(s)
- Ang Hu
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jiahe Tian
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xinpei Deng
- Department of Urology, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zhongyu Wang
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yin Li
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jianwei Wang
- Department of Ultrasound, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Longzhong Liu
- Department of Ultrasound, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Qiuli Li
- Department of Head and Neck Surgery, State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
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Lavarda Scheinpflug A, Marmitt L, Walter LB, Rados DV, Scheffel RS, Zanella AB, Dora JM, Maia AL. Active surveillance of nodal metastasis in differentiated thyroid carcinoma: a systematic review and meta-analysis. Endocrine 2024; 86:293-301. [PMID: 38713330 DOI: 10.1007/s12020-024-03837-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 04/14/2024] [Indexed: 05/08/2024]
Abstract
PURPOSE Cervical lymph nodes (LN) represent the most common site of recurrence in differentiated thyroid cancer (DTC), frequently requiring repeated interventions that contribute to increase morbidity to a usually indolent disease. Data on active surveillance (AS) of nodal metastasis are limited. Therefore, we performed a systematic review and meta-analysis to evaluate AS in nodal metastasis of DTC patients. METHODS MEDLINE, EMBASE, and Cochrane databases were searched up to July 2023 for studies including DTC patients with metastatic LN who were followed up with AS. The primary outcome was disease progression, according to the study's definition. Additional outcomes were LN enlargement ≥3 mm, occurrence of new cervical metastasis, and conversion from AS to surgical treatment. RESULTS The search identified 375 studies and seven were included, comprising 486 patients with metastatic nodal DTC. Most were female (69.5%) and had papillary thyroid cancer (99.8%). The mean AS follow-up ranged from 28-86 months. Following each study's definition of progression, the pooled incidence was 28% [95% confidence interval (CI), 20-37%]. The pooled incidence of LN growth ≥ 3 mm was 21% [95% CI, 17-25%] and the emergence of new LN sites was 19% [95% CI, 14-25%]. Combining growth of 3 mm and the emergence of new LN criteria, we found an incidence of 26% [95% CI, 20-33%]. The incidence of neck dissection during AS was 18% [95% CI, 12-26%]. CONCLUSIONS AS seems to be a suitable strategy for selected DTC patients with small nodal disease, avoiding or postponing surgical reintervention. PROSPERO REGISTRATION CRD42023438293.
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Affiliation(s)
- Anita Lavarda Scheinpflug
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Laura Marmitt
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Leonardo Barbi Walter
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Dimitris Varvaki Rados
- Internal Medicine Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael Selbach Scheffel
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Department of Pharmacology, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - André Borsatto Zanella
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - José Miguel Dora
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ana Luiza Maia
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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Solórzano M, Lustig N, Mosso L, Espinoza M, Santana R, Gonzalez H, Montero PH, Cruz F, Solar A, Domínguez JM. Active surveillance is a feasible and safe strategy in selected patients with papillary thyroid cancer and suspicious cervical lymph nodes detected after thyroidectomy. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2024; 68:e230146. [PMID: 38709151 PMCID: PMC11081046 DOI: 10.20945/2359-4292-2023-0146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/08/2023] [Indexed: 05/07/2024]
Abstract
Objective After initial treatment, up to 30% of patients with papillary thyroid cancer (PTC) have incomplete response, mainly cervical lymph node (LN) disease. Previous studies have suggested that active surveillance (AS) is a possible option for these patients. Our aim was to report the results of AS in patients with PTC and cervical LN disease. Materials and methods In this retrospective observational study, we included adult patients treated and followed for PTC, who presented with cervical LN disease and were managed with AS. Growth was defined as an increase ≥ 3mm in either diameter. Results We included 32 patients: 27 (84.4%) women, age of 39 ± 14 years, all initially treated with total thyroidectomy, and 22 (69%) with therapeutic neck dissection. Cervical LN disease was diagnosed 1 year (0.3-12.6) after initial management, with a diameter of 9.0 mm (6.0-19.0). After a median AS of 4.3 years (0.6-14.1), 4 (12.5%) patients had LNgrowth: 2 (50%) of whom were surgically removed, 1 (25%) was effectively treated with radiotherapy, and 1 (25%) had a scheduled surgery. Tg increase was the only predictive factor of LN growth evaluated as both the delta Tg (p < 0.0366) and percentage of Tg change (p < 0.0140). None of the included patients died, had local complications due to LN growth or salvage therapy, or developed distant metastases during follow-up. Conclusion In selected patients with PTC and suspicious cervical LNs diagnosed after initial treatment, AS is a feasible and safe strategy as it allows effective identification and treatment of the minority of patients who progress.
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Affiliation(s)
- Marlín Solórzano
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de estudios traslacionales de Endocrinología (Cetren) UC, Santiago, Chile
| | - Nicole Lustig
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de estudios traslacionales de Endocrinología (Cetren) UC, Santiago, Chile
| | - Lorena Mosso
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de estudios traslacionales de Endocrinología (Cetren) UC, Santiago, Chile
| | - Martín Espinoza
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Santana
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Hernan Gonzalez
- Departamento de Oncología Quirúrgica, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Pablo H Montero
- Departamento de Oncología Quirúrgica, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Cruz
- Departamento de Radiología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Ch
| | - Antonieta Solar
- Departamento de Patología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - José Miguel Domínguez
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile,
- Centro de estudios traslacionales de Endocrinología (Cetren) UC, Santiago, Chile,
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Walter LB, Scheffel RS, Zanella AB, Farenzena M, Faccin CS, Graudenz MS, Dora JM, Maia AL. Active Surveillance of Differentiated Thyroid Cancer Metastatic Cervical Lymph Nodes: A Retrospective Single-Center Cohort Study. Thyroid 2023; 33:312-320. [PMID: 36680747 DOI: 10.1089/thy.2022.0542] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background: The most frequent site of recurrence of differentiated thyroid cancer (DTC) is cervical lymph nodes (LNs), which often necessitates repeated surgical interventions and morbidity in a generally indolent disease. Data on active surveillance (AS) of small cervical nodal metastasis are still scarce, particularly in real-world clinical settings. In this study, we evaluated the DTC outcomes of AS of metastatic cervical LNs and explored factors associated with disease progression. Methods: We conducted a retrospective cohort study, including DTC patients with biopsy-proven metastatic cervical LNs, who were followed on AS in a tertiary care, university-based institution in Brazil. The inclusion criteria were cervical metastasis ≤2.0 cm and an AS duration of at least 6 months. We excluded lesions with aggressive histology, those in close proximity to or invading local structures. The primary outcome was disease progression (enlargement ≥3 mm in any diameter or a new cervical metastasis). Results: Data from 40 patients were analyzed. Most were female (77.5%) and had papillary thyroid cancer (97.5%). The mean age was 47.0 (± standard deviation 15.8) years. The 8th edition of the tumor, node, metastasis stage (TNM8) staging for DTC was as follows: 29 in stage I (74.4%), 8 in stage II (20.5%), and 2 in stage IV (5.0%). The median maximum LN diameter was 0.9 (interquartile range [IQR], 0.8-1.3) cm, and the median AS follow-up duration was 27.5 (IQR, 16.5-47.3) months. Disease progression occurred in 14 (35%) patients: 7 (17.5%) due to enlargement ≥3 mm, and 7 (17.5%) had new cervical metastasis. The cervical progression-free survival was 51.0 (confidence interval, 47.0-55.0) months. No demographic, oncological, or biochemical factors were associated with disease progression. Of the 14 patients with disease progression, 8 were referred for surgery. No permanent surgical complications were reported. Of the six patients who remained on AS despite disease progression, five showed no further progression during subsequent follow-up (range 6-40 months). Conclusions: We observed that most small metastatic cervical LNs remained stable and were safely managed with AS. Nevertheless, these observations are limited by the retrospective design, small sample size, and short follow-up. Further prospective and long-term studies are warranted.
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Affiliation(s)
- Leonardo Barbi Walter
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael Selbach Scheffel
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
- Department of Pharmacology, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Andre Borsatto Zanella
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Mauricio Farenzena
- Department of Radiology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Carlo Sasso Faccin
- Department of Radiology, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Marcia Silveira Graudenz
- Department of Pathology, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - José Miguel Dora
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ana Luiza Maia
- Thyroid Unit, Hospital de Clínicas de Porto Alegre, Medical School, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Parvathareddy SK, Siraj AK, Annaiyappanaidu P, Siraj N, Al-Sobhi SS, Al-Dayel F, Al-Kuraya KS. Bilateral multifocality is an independent predictor of patients' outcome in Middle Eastern papillary thyroid carcinoma. Front Endocrinol (Lausanne) 2023; 13:1060301. [PMID: 36686467 PMCID: PMC9846198 DOI: 10.3389/fendo.2022.1060301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Background Tumor multifocality is frequently seen in Papillary thyroid carcinoma (PTC). However, few studies have analysed the impact of bilateral multifocality in PTC. The incidence of bilateral multifocality, its clinico-pathological associations and prognostic impact in PTC from Middle Eastern ethnicity remains unestablished. Methods We retrospectively evaluated 1283 patients who underwent total thyroidectomy for PTC. Bilateral and unilateral multifocality were decided based on the final pathology result. Primary outcome was recurrence free survival (RFS). Risk factors for bilateral multifocality were analyzed by multivariate logistic regression analysis. Results Multifocal PTC was found in 54.3% (697/1283) of patients. Among the 697 multifocal PTCs, 210 patients (30.1%) had unilateral multifocal PTC and 487 patients (69.9%) had bilateral multifocality. Bilateral multifocality was significantly associated with older age at diagnosis (p = 0.0263), male gender (p = 0.0201), gross extrathyroidal extension (p = 0.0332), larger primary tumor size (>4cm; p = 0.0002), lateral lymph node metastasis (p = 0.0008), distant metastasis at diagnosis (p = 0.0195) and recurrence (p = 0.0001). Bilateral multifocality was also found to be an independent predictor of RFS (Hazard ratio = 1.60; 95% Confidence Interval = 1.05 - 2.55; p = 0.0300). Multivariate logistic regression analysis demonstrated tumor diameter >4cm to be the only independent risk factors for bilaterality in multifocal PTC (Odds ratio = 1.86; 95% Confidence Interval = 1.13 - 3.07; p = 0.0155). Conclusions Incidence of bilateral multifocality is high in Middle Eastern PTC. Tumor diameter >4cm can be considered as a predictive factor for bilateral multifocal PTC. Bilateral multifocality appears to be an important prognostic factor for PTC and an independent predictor of RFS. Therefore, patients with bilateral multifocal PTC may benefit from more frequent follow-up to identify recurrences earlier.
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Affiliation(s)
- Sandeep Kumar Parvathareddy
- Human Cancer Genomic Research, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Abdul K. Siraj
- Human Cancer Genomic Research, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Padmanaban Annaiyappanaidu
- Human Cancer Genomic Research, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Nabil Siraj
- Human Cancer Genomic Research, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Saif S. Al-Sobhi
- Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Fouad Al-Dayel
- Department of Pathology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Khawla S. Al-Kuraya
- Human Cancer Genomic Research, Research Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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Jerkovich F, Abelleira E, Bueno F, Guerrero L, Pitoia F. Active Surveillance of Small Metastatic Lymph Nodes as an Alternative to Surgery in Selected Patients with Low-Risk Papillary Thyroid Cancer: A Retrospective Cohort Study. Thyroid 2022; 32:1178-1183. [PMID: 35876426 DOI: 10.1089/thy.2022.0302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Background: It has been suggested that small metastatic lymph nodes (LNs) detected after initial surgery in patients with differentiated thyroid cancer (DTC) can be managed with active surveillance (AS). However, there is still concern regarding the clinical outcomes of these patients. The main aims of our study were as follows: (1) to assess the frequency of growth and the need of additional treatment in a group of patients with LN recurrences selected for AS, and (2) to determine predictive factors of LN progression. Methods: We retrospectively reviewed 856 clinical records from our DTC patient's database (May 2010 to January 2022). Eighty patients had suspicious cervical LNs on consecutive ultrasound (US) after initial surgery, but we included 50 patients with cytological confirmation of metastatic disease and at least 12 months follow-up. Exclusion criteria were as follows: any LN ≥2 cm or multiple LNs ≥1.5 cm in size, proximity to vital structures, PET-positive disease (standard uptake value ≥5), aggressive histology, and distant metastasis. Patients were followed with thyroglobulin (Tg) and thyroglobulin antibodies measurements on suppressive therapy and neck US every 6-12 months. LN growth was defined as an increase of ≥3 mm in any of its diameters. Results: A total of 50 patients had a median age of 41 years (range, 18-75). Most patients were women (80%) and had classical papillary thyroid cancer (86%). The mean size of the LNs was 10.1 ± 4.4 mm. After a median follow-up of 29 months (range, 12-144), 12 patients (24%) had an increase in size of the metastatic LN, 7 (58%) of whom were surgically removed. None of these seven patients had a structural incomplete response at the end of follow-up. The only variable that predicted an increase in LN size was a rise in Tg levels ≥0.5 ng/mL (p = 0.016). Based on a multivariate analysis, patients with increase in Tg levels ≥0.5 ng/mL had a significantly higher chance of developing LN growth (odds ratio [OR] 16.2 [confidence interval, CI 1.5-120.2], p = 0.020). The median progression-free survival rate was 6.6 years [CI 5.6-9.5]. Conclusion: AS of small LNs could be a feasible alternative to immediate surgery in properly selected patients.
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Affiliation(s)
- Fernando Jerkovich
- Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, Buenos Aires, Argentina
| | - Erika Abelleira
- Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, Buenos Aires, Argentina
| | - Fernanda Bueno
- Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, Buenos Aires, Argentina
| | - Leidy Guerrero
- Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, Buenos Aires, Argentina
| | - Fabián Pitoia
- Division of Endocrinology, Hospital de Clínicas, University of Buenos Aires, Buenos Aires, Argentina
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Shu X, Tang L, Hu D, Wang Y, Yu P, Yang Z, Deng C, Wang D, Su X. Prediction Model of Pathologic Central Lymph Node Negativity in cN0 Papillary Thyroid Carcinoma. Front Oncol 2021; 11:727984. [PMID: 34646771 PMCID: PMC8503674 DOI: 10.3389/fonc.2021.727984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/10/2021] [Indexed: 11/25/2022] Open
Abstract
Background Most patients with papillary thyroid carcinoma (PTC) have an excellent prognosis. Although central lymph node invasion is frequent, management via central lymph node dissection (CLND) remains controversial. The present study retrospectively investigated independent predictors of pathologic central lymph node negativity (pCLN-) and established a prediction model for pCLN- in clinical lymph node negativity (cN0) PTC. Methods A total of 2,687 patients underwent thyroid surgery for cN0 PTC from 2013 to 2018 at the First Affiliated Hospital of Chongqing Medical University, and lobectomy plus ipsilateral CLND was the basic surgical extent. Clinicopathological characteristics were reviewed and analyzed. Univariate and multivariate analyses were performed to identify factors related to pCLN-. A prediction model was established based on the results of multivariate analyses. Results The pCLN- rate was 51.5% (1,383/2,687). Multivariate analysis revealed that sex, age, thyroid stimulating hormone (TSH), size, location, laterality, unifocality and extrathyroidal extension negativity (ETE-) were independent predictors of pCLN-. The nomogram showed good discriminative ability (C-index: 0.784 and 0.787 in derivation and validation groups, respectively) and was well calibrated. We quantified the clinical usefulness of the nomogram by decision curve analysis. The median length of follow-up was 30 (range 12– 83) months, and 190 cases were lost, with a follow-up rate of 92.9% (2,497/2,687). Of the 2,687 patients included, 21 (0.8%) experienced recurrence. Conclusion This nomogram, which integrates available preoperative clinicopathological features and intraoperative frozen biopsy outcomes, is a reliable tool with high accuracy to predict pCLN- in cN0 PTC.
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Affiliation(s)
- Xiujie Shu
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lingfeng Tang
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Daixing Hu
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuanyuan Wang
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ping Yu
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhixin Yang
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chang Deng
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Denghui Wang
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xinliang Su
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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