Objective To compare differences of characteristics of ultrasonic elasticity imaging for benign and malignant small thyroid nodules with or without Hashimoto thyroiditis (HT). Methods The thyroid nodules with ≤1 cm size and the category 4A, 4B, 4C, and 5 of Thyroid Imaging Reporting and Data System (TI-RADS) were included into this study, and a further examination of real-time elastography was performed. The final diagnosis was relied on the pathological diagnosis. The elasticity score and strain ratio (SR) were recorded and compared between these two groups, respectively. Results Of the 424 nodules, 103 nodules were accompanied with HT (thyroid nodule with HT group), 321 nodules were not accompanied with HT (thyroid nodule without HT group). In the thyroid nodule with HT group, the area under the receiver operator characteristic (ROC) curve (AUCs) of the elasticity score and the SR was 0.685 and 0.676, respectively; the optimal cut offs of the elasticity score and the SR was 3 points and 2.45 respectively, their corresponding sensitivity, specificity, and accuracy was 75.7%, 57.6%, 68.0% and 75.7%, 60.6%, 67.6%, respectively. In the thyroid nodule without HT group, the AUCs of the elasticity score and the SR was 0.692 and 0.692, respectively; the optimal cut offs of the elasticity score and the SR was 4 points and 2.84, respectively; their corresponding sensitivity, specificity, and accuracy was 57.5%, 74.2%, 69.2% and 76.1%, 59.7%, 67.7%, respectively. Conclusions Elastography is helpful in differential diagnosis of benign and malignant small thyroid nodules. While, standards of elasticity score and SR value in differential diagnosis are different between benign and malignant small thyroid nodules with HT and without HT, elasticity score and SR ratio decrease in benign and malignant small thyroid nodules with HT.
【Abstract】Objective To study the relation between iodine and experimental autoimmune thyroiditis(EAT). Methods Establishment of animal model was performed with iodine and thyroglobulin(TG).The rats were randomly divided into 5 groups: normal control group(NC), low iodine group (LI,500 μg/L), high iodine group(HI,500 mg/L), TG+Freund adjuvant group(TG) and TG+Freund adjuvant+HI group(TG+HI). The rats in TG group and TG+HI group were rejected hypodermically with TG emulsified by complete Freund adjuvant, and strengthen immunity was conducted with TG emulsified by incomplete Freund adjuvant on 15 days. After that, strengthen immunity was done weekly till the end of the experiment. Serum TGAb and TPOAb were measured by radioimmunoassay. Observation of the pathological changes of thyroid gland was also done. Results Thyroid follicular destruction and lymphocytic infiltration in the TG+HI group (3.83±1.72) and HI group (3.00±0.89) were significantly higher than that of the NC group(0.67±0.82)，P＜0.05. The results of the TG group were higher compared with the NC group, but there were no significant differences between them（Pgt;0.05）. The levels of TGAb in the TG+HI (4.990±1.505)，HI (3.589±1.240) and TG group (4.883±1.198) were significant higher than those of the NC group (0.642±0.454) and the LI group (0.707±0.240)，P＜0.01. The levels of TPOAb in TG+HI group (1.475±0.523) and TG group (1.316±0.606) were significantly higher than those of the NC group (0.365±0.196) and the LI group（P＜0.01）. Serum TGAb and TPOAb levels were positively correlated with the histological grades of lymphocytic thyroiditis(r=0.9,P＜0.05）. Conclusion Excessive iodine intake may induce the occurrence of EAT. The induction of EAT with excessive iodine and TG may be more efficient.
Objective To explore the potential causal relationship between thyroid dysfunction and osteoporosis (OP) through bidirectional two-sample Mendelian randomization (MR) analysis to provide genetic evidence for the risk association between thyroid dysfunction and OP, and provide reference for early prevention and treatment of OP. Methods Causal relationships were estimated based on data from genome-wide association studies for hypothyroidism (n=410141), hyperthyroidism (n=460499), Hashimoto thyroiditis (n=395640), and OP (n=212778). The inverse variance weighted method was used as the main analysis method, and the other four methods were used as the supplementary analysis methods to evaluate the causal effect of thyroid dysfunction and OP. Results The results of inverse variance weighted method showed that hypothyroidism [odds ratio (OR)=1.097, 95% confidence interval (CI) (1.017, 1.183), P=0.017], hyperthyroidism [OR=1.089, 95%CI (1.000, 1.186), P=0.049] and Hashimoto thyroiditis [OR=1.190, 95%CI (1.054, 1.343), P=0.005] were positively correlated with the causal effect of OP. The results of reverse MR analysis did not support that OP would increase the risk of hypothyroidism, hyperthyroidism or Hashimoto thyroiditis (P>0.05). In the bidirectional MR analyses, there was no heterogeneity in Cochran Q detection, MR-Egger intercept test results showed that there was no horizontal pleotropy, and the leave-one-out method analysis results showed that the MR analysis results were reliable. Conclusion Hypothyroidism, hyperthyroidism, and Hashimoto thyroiditis increase the risk of OP, while OP is not found to increase the risk of thyroid dysfunction in reverse studies.
ObjectiveTo investigate the structure, ligand, and tissue distribution of galectin-3, the relationship of galectin3 with tumor and the expression of galectin-3 in several thyroid diseases. MethodsRelated articles were reviewed. ResultsGalectin-3 was expressed in normal and tumor cell that regulated cell growth, differentiation, adhesion, apoptosis, and angiogenesis, which participated invasion and metastasis of tumor. ConclusionGalectin-3 may be used to discriminate benign and malignant thyroid tumor.
ObjectiveTo analyze clinical manifestation, diagnosis, therapy, and prognosis of primary thyroid lymphoma. MethodFrom April 2012 to September 2015, the clinical data of 9 patients with primary thyroid lymphoma admitted to The Affiliated Hospital of Xuzhou Medical College, including clinical manifestation, diagnosis procedure, treatment project, and prognosis, were reviewed retrospectively. ResultsThe thyroids or nodules of 4 patients increased rapidly in 1-3 months, with the surrounding tissues and organs oppression symptoms. The preoperative examination revealed that there were 5 patients with swollen lymph nodes. Eight patients were received preoperative thyroid function examination, there were 4 patients with subclinical hypothyroidism, 4 patients with rose TSH, 6 patients with rose thyroglobulin antibody. There were 5 cases of primary thyroid lymphoma associated with Hashimoto thyroiditis. Eight patients were underwent surgical treatment in our hospital, 1 patient was underwent surgery in the other hospital. The results of pathological histology showed that 5 patients with mucosa associated lymphadenoma were stageⅠE, 3 patients with diffuse large B cell lymphoma were stageⅠE, 1 patient with diffuse large B cell lymphoma was stageⅡE. Two patients with diffuse large B cell lymphoma were received chemotherapy, the scheme was CHOP and COP respectively. Seven patients were received follow-up, the follow-up time was 2-42 months, the median follow-up time was 20 months, all of them were survived. ConclusionsPrimary thyroid lymphoma should be considered for patients with rapid growth of thyroid mass in a short term, which relies on the histopathologic and immunohistochemical diagnosis finally. The individualized treatment should be performed for primary thyroid lymphoma according to pathological classification.
Objective To summarize research status of correlation of chronic lymphocytic thyroiditis (CLT) and papillary thyroid carcinoma (PTC), in order to provide a basis for early diagnosis, prognosis, and prevention of PTC. Method The literatures about the recent studies of the correlation of the CLT and PTC were reviewed according to the results searched from PubMed database, SpringerLink database, Web of Science database, Wanfang database, CNKI database, and VIP database. Results The most of patients with CLT combined with PTC are young women, the characteristics are multifocal and occult, the prognosis is good. Its genesis might be related to the ionizing radiation, iodine intake, endocrine disorders, immune disorders, molecular biology, and other factors. But there are still different controversies about its specific pathogenesis and surgical treatment. Conclusions CLT is closely related to PTC. However, relationship between CLT combined with PTC and changing regularity of molecular biology, pathogenesis, or prognosis needs further to be studied and followed-up for a longer-term.
ObjectiveTo detect the expression of programmed cell death ligand 1 (PD-L1) in papillary thyroid carcinoma (PTC) and PTC with coexistent Hashimoto’s thyroiditis (HT) tissues, and to explore its clinical significance of its expression.MethodsThe PTC patients who underwent thyroidectomy at the Thyroid Surgery Department of the Affiliated Hospital of Guizhou Medical University from March 2017 to May 2019 were retrospectively collected. Immunohistochemical staining was used to detect the expression of PD-L1 in the PTC tissues, PD-L1 staining positive cells ≥20% was judged as positive expression, <20% was judged as negative expression. The relationship between PD-L1 positive expression rate and clinicopathologic characteristics of patients with PTC were analyzed, and the correlation between the presence of HT in PTC tissues and PD-L1 positive expression was studied.ResultsA total of 138 patients with PTC were included in this study, including 104 patients with PTC alone and 34 PTC patients with coexistent HT. The positive rate of PD-L1 expression in the 138 cases of PTC tissues was 35.5% (49/138), among which was 43.3% (45/104) in the pure PTC tissues, and 11.8% (4/34) in the PTC tissues with HT, the latter was significantly lower than the former (P=0.001). The results of univariate analysis showed that the positive rate of PD-L1 expression was related to the tumor size, the presence or absence of extraglandular invasion and HT in PTC patients (P<0.05), and the results of Spearman correlation analysis showed that the positive rate of PD-L1 expression was positively correlated with tumor size (rs=0.173, P=0.041) and extraglandular invasion (rs=0.197, P=0.021), and negatively correlated with whether TH was merged (rs=–0.284, P=0.001). The multivariate analysis results showed that the positive rate of PD-L1 expression was closely related to whether PTC with coexistent HT [OR=5.720, 95%CI (1.879, 17.411), P=0.002], and it was not found to be related to tumor size and presence of extraglandular invasion (P>0.05).ConclusionsPositive rate of PD-L1 expression has a certain relationship with tumor size and presence or absence of extraglandular invasion, and which in PTC patients with or without HT is significantly different, that is, positive rate of PD-L1 expression in PTC with HT is lower suggests that coexistent HT might be an inhibitory factor in occurrence of PTC, and immune microenvironment-related factors of PTC might be involved in occurrence and development of thyroid cancer.
【Abstract】ObjectiveTo summarize the experience in diagnosis and treatment for chronic lymphocytic thyroiditis or complicated with other thyroid diseases． MethodsSeventyseven patients were diagnosed as chronic lymphocytic thyroiditis or complicated with other thyroid diseases by operation and histological examination at this department from November 2002 to March 2005. All their clinical records including general information, the results of careful physical examination， thyroid correlated hormone tests， color Doppler, fine needle aspiration cytological examination and some intraoperative examinations have been retrospectively analyzed in this report. ResultsThere were 53 cases of simple chronic lymphocytic thyroiditis, 10 cases complicated by papillary carcinoma， 1 case complicated by follicular carcinoma， 2 cases complicated by nonHodgkin’s lymphoma, 6 cases complicated by nodular goiter, 4 cases complicated by follicular adenoma, and 1 complicated by parathyroid adenoma. Almost all the operations were successfull and the symptoms of the diseases were alleviated. Seventytwo patients had been followed up ranging from two months to two years differently and none of them relapsed. Sixtythree of these patients have received thyrine inhibition and vicariousness treatment, 2 patients who complicated by nonHodgkin’s lymphoma had been hospitalized and 7 patients complicated by carcinoma were treated with iodine131. ConclusionThe clinical manifestations of chronic lymphocytic thyroiditis are complex, and it often complicated with other thyroid disease, which make it difficult to diagnose the diseases before operation. However, some ancillary methods such as careful physical examination， thyroid correlated hormone tests， color Doppler and fine needle aspiration cytological examination may improve the accuracy of preoperative diagnosis. Intraoperative thyroid lamellar section and frozen histological examination are also very important for intraoperative diagnosis and operative modality selection．
Objective To summarize the relationship between IgG4 and IgG4 related thyroid diseases. Methods Domestic and international publications involving the pathological features of IgG4-related thyroid diseases and relationship with IgG4 were retrieved and reviewed. Results IgG4-related disease was a newly recognized class of chronic and systemic lymphocytes disease， which may be solitary or involving multiple body organs， as well as thyroid. The expression of IgG4 was found in leisons of Hashimoto thyroiditis， Riedel thyroiditis， and papillary thyroid carcinoma. Conclusions IgG4-related thyroid disease is a new concept of thyroiditis. The knowledge of this new disease will provide appropriate treatment for patients with thyroiditis.
Objective To summarize the progress of research about the relationship between papillary thyroid carcinoma (PTC) and Hashimoto’s thyroiditis (HT). Method The relevant literatures at home and abroad in recent years about this topic were collected and analyzed. Results Comprehensive literature reviewed, combined with the author's clinical research results, PTC and HT were indeed closely related, or there was a certain causal link. HT and PTC might both come from the same embryonic stem cells. HT was an autoimmune thyroid disease caused by abnormal immune response, and might be a triggering factor of PTC. Meanwhile, lymphocyte infiltration might play a certain protective role in anti-tumor effect. RET chromosome rearrangement, RAS point mutation and BRAF gene mutation might activate mitogen-activated protein kinase (MAPK) pathway, especially in PTC cases with HT in which RET chromosome rearrangement was more common. In the future, selective targeted therapy aiming at the activation of RET/RAS/BRAF/MAPK pathway was a promising treatment especially in advanced PTC cases. Conclusions The correlation between PTC and HT is not fully clarified. HT is a potential risk factor for PTC but the cases of PTC with HT have a better prognosis. More prospective studies will help to further clarify the correlation between two diseases.