Purpose
Central lymph node metastasis (CNM) are highly prevalent but hard to detect preoperatively in papillary thyroid carcinoma (PTC) patients, while the significance of prophylactic compartment central lymph node dissection (CLND) remains controversial as a treatment option. We aim to establish a nomogram assessing risks of CNM in PTC patients, and explore whether prophylactic CLND should be recommended.
Materials and Methods
One thousand four hundred thirty-eight patients from two clinical centers that underwent thyroidectomy with CLND for PTC within the period 2016–2019 were retrospectively analyzed. Univariate and multivariate analysis were performed to examine risk factors associated with CNM. A nomogram for predicting CNM was established, thereafter internally and externally validated.
Results
Seven variables were found to be significantly associated with CNM and were used to construct the model. These were as follows: thyroid capsular invasion, multifocality, creatinine > 70 μmol/L, age < 40, tumor size > 1 cm, body mass index < 22, and carcinoembryonic antigen > 1 ng/mL. The nomogram had good discrimination with a concordance index of 0.854 (95% confidence interval [CI], 0.843 to 0.867), supported by an external validation point estimate of 0.825 (95% CI, 0.793 to 0.857). A decision curve analysis was made to evaluate nomogram and ultrasonography for predicting CNM.
Conclusion
A validated nomogram utilizing readily available preoperative variables was developed to predict the probability of central lymph node metastases in patients presenting with PTC. This nomogram may help surgeons make appropriate surgical decisions in the management of PTC, especially in terms of whether prophylactic CLND is warranted.
Citations
Citations to this article as recorded by
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Purpose
The association between tobacco smoking and thyroid cancer remains uncertain. We evaluated the associations of active and passive smokingwith the risk of papillary thyroid cancer (PTC), the most common type of thyroid cancer, and with the BRAFV600E mutation, the most common oncogenic mutation in PTC related to poor prognosis.
Materials and Methods
We conducted this study with newly diagnosed PTC patients (n=2,142) and community controls (n=21,420) individually matched to cases for age and sex. Information on active and passive smoking and potential confounders were obtained from structured questionnaires, anthropometric measurements, and medical records. BRAFV600E mutation status was assessed in PTC patients. We evaluated the associations of active and passive smoking with PTC and BRAFV600E mutation risk using conditional and unconditional logistic regression models, respectively.
Results
We did not find associations between exposure indices of active and passive smoking and PTC risk in both men and women, except for the association between current smoking and lower PTC risk. Cumulative smoking ≥ 20 pack-years was associated with lower BRAFV600E mutation risk in male PTC patients (odds ratio [OR], 0.55; 95% confidence interval [CI], 0.30 to 1.00). The CI for the association was wider in female PTC patients (OR, 0.23; 95% CI, 0.02 to 2.62), possibly owing to a smaller sample size in this stratum.
Conclusion
We did not find consistent associations between active and passive smoking and PTC risk. Cumulative smoking ≥ 20 pack-years was associated with lower BRAFV600E mutation risk in male PTC patients.
Citations
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Geographic variation in the association between Hashimoto’s thyroiditis and Papillary thyroid carcinoma, a meta-analysis Nabil W. G. Sweis, Ayman A. Zayed, Mira Al Jaberi, Lina AlQirem, Tala Basheer Hyasat, Farah A. Khraisat, Ward Maaita, Ahmad Moayad Naser, Abdullah Nimer, Mamoon Qatamin, Jaleel J. G. Sweis, Nadia Sweis, Abdallah T. Al-Ani, Ahmad M. Alghrabli, Alireza Hagh Endocrine.2023; 81(3): 432. CrossRef
Sex-specific Associations between Body Mass Index and Thyroid Cancer Incidence among Korean Adults Kyoung-Nam Kim, Kyungsik Kim, Sangjun Lee, Sue K. Park Cancer Epidemiology, Biomarkers & Prevention.2023; 32(9): 1227. CrossRef
Effect of Cigarette Smoking on Thyroid Cancer: Meta-Analysis Joon-Hyop Lee, Young Jun Chai, Ka Hee Yi Endocrinology and Metabolism.2021; 36(3): 590. CrossRef
Tobacco smoking and risk of thyroid cancer according to BRAFV600E mutational subtypes Sabbir T. Rahman, Nirmala Pandeya, Rachel E. Neale, Donald S. A. McLeod, Peter D. Baade, Philippa H. Youl, Roger Allison, Susan Leonard, Susan J. Jordan Clinical Endocrinology.2021; 95(6): 891. CrossRef
circFAT1(e2) Promotes Papillary Thyroid Cancer Proliferation, Migration, and Invasion via the miRNA-873/ZEB1 Axis Jiazhe Liu, Hongchang Li, Chuanchao Wei, Junbin Ding, Jingfeng Lu, Gaofeng Pan, Anwei Mao, Tao Huang Computational and Mathematical Methods in Medicine.2020; 2020: 1. CrossRef
Purpose
The Notch signaling pathway is widely expressed in normal, reactive, and neoplastic tissues; however, its role in thyroid tissues has not been fully elucidated. Therefore, this study was conducted to characterize the expression of the Notch signaling pathway in papillary thyroid cancer (PTC) cells and anaplastic thyroid cancer (ATC) cells.
Materials and Methods
Expression of activated Notch1 in ATC and PTC paraffin-embedded tissues was determined by immunohistochemistry. The small interfering RNA techniquewas employed to knock down Notch1 expression in ATC and PTC cell lines.
Results
The expression of activated Notch1 was higher in ATC cases than in PTC cases. Inhibition of Notch1 significantly reduced proliferation and migration of ATC cells, but not PTC cells. In addition, inhibition of Notch1 in ATC cells significantly reduced the expression of key markers of epithelial-mesenchymal transition and cancer stem cells. Conversely, changes in the expression of these proteins were not observed in PTC cells.
Conclusion
The results of this study suggest that Notch1 expression plays different roles in tumor progression in ATC and PTC cells. We also found that Notch1 expression was significantly related to the highly invasive or proliferative activity of ATC cells.
Citations
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TMEM252 inhibits epithelial–mesenchymal transition and progression in papillary thyroid carcinoma by regulating Notch1 expression Shuyong Zhang, Rong Xie, Liuhuan Wang, Guoxue Fu, Chenxi Zhang, Yang Zhang, Jichun Yu Head & Neck.2024;[Epub] CrossRef
BRAFV600E Overrides NOTCH Signaling in Thyroid Cancer Florian Traversi, Amandine Stooss, Matthias S. Dettmer, Roch-Philippe Charles Thyroid.2021; 31(5): 787. CrossRef
Thyroid Carcinoma: Phenotypic Features, Underlying Biology and Potential Relevance for Targeting Therapy Jinwei Hu, Isabella J. Yuan, Saied Mirshahidi, Alfred Simental, Steve C. Lee, Xiangpeng Yuan International Journal of Molecular Sciences.2021; 22(4): 1950. CrossRef
The Knockdown of Nrf2 Suppressed Tumor Growth and Increased the Sensitivity to Lenvatinib in Anaplastic Thyroid Cancer Zhongqin Gong, Lingbin Xue, Minghui Wei, Zhimin Liu, Alexander C. Vlantis, C. Andrew van Hasselt, Jason Y. K. Chan, Dongcai Li, Xianhai Zeng, Michael C. F. Tong, George G. Chen, Sander Bekeschus Oxidative Medicine and Cellular Longevity.2021;[Epub] CrossRef
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The most common pancreatic cystic lesion is pancreatic pseudocyst which represents about 85%. Primary cystic neoplasms represent about 10 to 15% of the lesion.
Pathologically cystic neoplasms can be classified into serous cystadenoma, mucinous cystadenoma and papillary cystic neoplasm by epithelial lining-cell, whereas pseudocyst is characterized by fibrotic capsules. Mucinous form is known to be premalignant or malignant and serous cystadenoma was known to be benign in the past, but recently 4 cases of malignant transformation have been reported.
Serous cystadenoma is described under a variety of names, including microcystic adenoma and glycogen-rich cystadenoma but recently macroqystic variants have been reported. Serous cystadenoma is most commonly seen in middle aged women with symptoms of vague upper abdominal pain or palpable mass. It is sometimes associated with extra- pancreatic diseases such as gallstones, diabetes mellitus, hypertension, duodenal ulcers, sterility, obesity and thymic dysfunction, but coexisting papillary thyroid cancer have been reported in only 2 cases to our knowledge. The pathogenesis of associated diseases is unknown and appears to be due to function of age of the patients or incidental occurrence.
Herein, we report a patient who had a pancreatic serous cystadenoma coexisting with papillary thyroid cancer. Since pancreatic serous cystadenoma can occur in association with papaillary thyroid cancer, examination of thyroid seems to be advisable when pancreatic serous cystadenoma is found.