Objective To investigate the value of CT signs in combination with clinical materials of papillary thyroid carcinoma (PTC) to predict the central lymph node metastasis (CLNM).Methods This article reviewed the CT signs and clinical materials of 366 patients with surgically and pathologically verified PTC.The single factor and multi-factor logistic regression analyses were performed on the relation of tumor position,thyroid marginal contact,calcification,plain scan border,border after enhancement,diameter,age and sex with CLNM.Results Among the 366 patients with PTC,the number of patients with positive CLNM and negative CLNM was 155 and 211 respectively.The single factor and multi-factor logistic regression analysis indicated that the thyroid marginal contact,diameter,age and sex were related with CLNM,and the more common patients diagnosed with CLNM had the following features:thyroid marginal contact,a diameter ＞1.0 cm,age ＜45 years and males (P＜ 0.05).Among the single risk factors,the tumor position,calcification,plain scan border and border after enhancement were unrelated with CLNM (P＞0.05).Conclusion The thyroid margin contact,diameter＞l.0 cm,age＜45 years and males are independent risk factors in diagnosis of positive CLNM.

Objective To analyze CT characteristics of patients with primary parathyroid hyperplasia ( PPH) , parathyroid adenoma ( PA) , atypical parathyroid adenoma ( APA) , and parathyroid carcinoma ( PC) and to evaluate the value of CT in the diagnosis and differential diagnosis of primary hyperparathyroidism ( PHPT ) . Methods CT scan of 134 pathologically proved PHPT patients with complete clinical and laboratory data were retrorespectively analyzed .The similarities and differences of CT features in patients with PPH , PA, APA and PC were studied.Results Among 140 lesions in the 134 patients, 130 cases had solitary parathyroid mass and 4 cases had 10 parathyroid masses , including 22 lesions in 17 patients with PPH, with the diameter ranging from 0.6 cm to 2.8 cm(1.2 ±0.6)cm, 106 lesions in 105 patients with PA, with the diameter ranging from 0.3 cm to 3.2 cm (1.1 ±0.6)cm, 10 lesions in 10 patients with APA, with the diameter ranging from 0.9 cm to 3.3 cm(2.6 ± 0.6)cm, and 2 lesions in 2 patients with PC, with the diameter ranging from 2.1 cm to 3.0 cm(2.6 ±0.6)cm. 124 lesions were located in tracheo-esophageal groove or at the side of trachea on CT .The boundaries between the parathyroid and thyroid gland were low density .3 lesions did not appear .9 lesions were located at the area over the manubrium sterni among 13 lesions which were ectopic.CT images showed round (29.9%,41/137), oval (38.0%,52/137), triangular(19.7%, 27/137), and cylindrical(12.4%,17/137) tumors in 137 lesions.The density of lesions were 30-66 Hu(45.0 ±12.3)Hu on non-enhanced CT scan, and 59-209 Hu(121.8 ±32.7)Hu on enhanced scan .Different pathological lesions had no statistical difference on location ( left upper , left lower , right upper, right lower, ectopic)(χ2 =15.839), linear low density sign(χ2 =1.896), shape(χ2 =10.945), non-enhanced CT(χ2 =0.915) or enhancement CT(χ2 =6.165)(P>0.05).Different pathological lesions had statistical significance on sizes(χ2 =18.395, P<0.05).The diameter of APA-PC was bigger than that in PH-PA.99 lesions exhibited homogeneous enhancement , and 38 lesions exhibited heterogeneous enhancement .The necrosis rate of APA-PC was more than that of PH-PA(χ2 =7.929, P<0.05).Conclusions The lesions origi-nate from parathyroid if they are located in tracheo-esophageal groove or at the side of trachea with hyperparathy-roidism.Multiple lesions help in PH diagnosis .Large size and necrosis in lesions imply APA or PC .The location (left upper, left lower, right upper, right lower, ectopic), shape, density and the degree of enhancement of the lesions have not specificity for diagnosis of PHPT .

Objective To investigate the diagnostic value of hyperenhancement sign on ultrasound,CT and their combination in diagnosis of thyroid benign and malignant nodules.Methods The contrast-enhanced ultrasound and enhanced CT datas of 172 thyroid nodules in 144 cases confirmed by operation and pathology were retrospectively analyzed,including 97 benign nodules and 75 malignant nodules.According to the degree of enhancement,these nodules were divided into iso-or low-enhancement and hyperenhancement.The distributions of ultrasound hyperenhancement,CT hyperenhancement and both of them in thyroid benign and malignant nodules,adenomatoid lesions and nodular goiters were analyzed,followed byx2 test for statistical analysis.Results In 172 thyroid nodules,the proportions of ultrasound hyperenhancement,CT hyperenhancement and both of them in thyroid benign and malignant nodules were 53.6％(52/97) and 20.0％(15/75)(x2＝20.090,P＜0.05),34.0％ (33/97) and 4.0％ (3/75) (x2＝23.033,P＜0.05),31.0％ (30/97) and 0％ (0/75) (x2＝28.096,P＜0.05),respectively.Their sensitivity and specificity of diagnosing benign nodules were 53.6％ (52/97) and 80.0％ (60/75),34.0％ (33/97) and 96％ (72/75),30.9％ (30/97) and 100％ (75/75),respectively.The proportions of ultrasound hyperenhancement,CT hyperenhancement and both of them in adenomatoid lesions and nodular goiters were 96.9％(31/32) and 32.3％(21/65)0x2＝35.946,P＜0.05),65.6％(21/32) and 18.5％(12/65)(x2＝21.250,P＜0.05),65.6％(21/32) and 13.8％ (9/65)(x2＝26.912,P＜0.05).Their sensitivity and specificity of diagnosing adenomatoid lesions were 96.9％(31/32) and 67.7％(44/65),65.6％(21/32) and 81.5％(53/65),65.6％(21/32) and 87.2％(56/65).Conclusions Ultrasound hyperenhancement,CT hyperenhancement for diagnosing thyroid benign nodules are of significant value.Especially for adenomatoid nodules,ultrasound hyperenhancement has a higher sensitivity,while CT hyperenhancement has a higher specificity.Their combination can further improve the diagnostic specificity,thus reducing the unnecessary surgical trauma.

Objective:To investigate the predictive value of the clinicopathological features of breast cancer for pathological complete response (pCR) after neoadjuvant chemotherapy (NAC) and to establish a predictive model based on the clinicopathological features.Methods:Clinicopathological data collected from 182 patients who underwent NAC and surgical treatment in Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine from Jan. 2013 to Dec. 2019 were retrospectively analyzed. The univariate and multivariate analysis were used to analyze the relationship between clinicopathological features and pCR after neoadjuvant chemotherapy. The predictive value in predicting the efficacy of NAC was evaluated, the receiver operating characteristic (ROC) curve and Nomogram prediction model were constructed.Results:Multivariate Logistic regression analysis showed that progesterone receptor (PR) , human epidermal growth factor 2 (HER2) and platelet distribution width (PDW) were independent predictors of pCR after NAC for breast cancer. The area under the curve (AUC) of model for predicting efficacy of NAC was 0.810 (95% CI:0.745-0.864) and the sensitivity and specificity was 68.75% and 82.67% respectively when the Jordan Index is at its maximum. Conclusion:ER-, HER2+ and PDW≤13.4% show better efficacy of NAC. The Nomogram model based on them can accurately predict the efficacy of NAC and can provide a reference for the selection of treatment options in clinical diagnosis and treatment.

Central neck lymph node is the main site of metastasis of papillary thyroid cancer. However, the central area of dissection scope and integrity are still issues and controversies. The vast majority of papillary thyroid cancer in central lymph node dissection process, ignoring the lymph node posterior to fight recurrent laryngeal nerve (LN-prRLN), strictly speaking, does not do the central area of lymphatic adipose tissue intact, completely removed. This paper summarizes the recent literature on the LN-prRLN clinical dissection scope, the incidence of LN-prRLN transfer, LN-prRLN dissection impact on the incidence of complications, recurrence rate, mortality and survival rate were reviewed analysis, summarized the LN-prRLN dissection indications, clinical significance and importance.
Carcinoma ; surgery ; Carcinoma, Papillary ; Humans ; Incidence ; Lymph Node Excision ; Lymph Nodes ; Lymphatic Metastasis ; Neck ; Neoplasm Recurrence, Local ; Recurrent Laryngeal Nerve ; surgery ; Survival Rate ; Thyroid Neoplasms ; surgery

Long non-coding RNA(lncRNA) is non-protein coding transcripts longer than 200 nucleotides,which plays an important role in the development of the metabolic process.Thyroid cancer is the most common cancer of the endocrine system,and as reported,lncRNA is related to the occurrence and development of thyroid tumors.Therefore,this paper reports the latest domestic and foreign research progress about lncRNA in thyroid tumor,in order to provide new ideas for molecular diagnosis and treatment of thyroid cancer.

Objective To investigate the diagnostic value of computed tomography (CT) histogram analysis for thyroid malignant solitary coarse calcification nodules (MSCN).Methods A total of 89 thyroid solitary coarse calcification nodules (coarse calcification ≥5 mm,no definite soft tissue around calcification) confirmed either by surgery or histopathological examination in 86 patients enrolled in this study from Jan.2009 to Dec.2015 were evaluated,including 33 MSCN from 32 patients and 56 benign solitary coarse calcification nodules (BSCN) from 56 patients.Overall,27 cut-off values were calculated by N (4 ≤ N ≤ 30) times of 50 Hounsfield units (HU) in the range of 200 HU to 1500 HU,and each cut-off value and the differences in the corresponding area percentages in the CT histogram were recorded for MSCN and BSCN.The optimal cut-off value and the corresponding area percentage were established by receiver operating characteristic (ROC) curve analysis.Results In the 24 groups with an ROC area under the curve (AUC) of more than 0.7,at a cut-off value of 1150 HU and at an area percentage of no less than 98.4％,the ROC AUC reached a maximum of 0.86,and the accuracy,sensitivity,and specificity were 70.8％,93.9％,and 57.1％,respectively.At a cut-off value of 450 HU and at an area percentage of no less than 46.3％,the accuracy,sensitivity,and specificity were 76.4％,48.5％,and 92.9％,respectively.At a cut-off value of 550 HU and at an area percentage of no less than 81.5％,the accuracy,sensitivity,and specificity were 75.3％,33.3％,and 100％,respectively.Conclusions In comparison with the cut-off value of 1150 HU with an area percentage of no less than 98.4％,the sensitivities for the cut-off value of 450 HU with an area percentage of no less than 46.3％ and for the cut-off value of 550 HU with an area percentage of no less than 81.5％ were lower;however,the specificities increased significantly,providing an important basis for reducing the misdiagnosis of MSCN.

Preoperative serum specimens were collected from 249 endometrial cancers and 99 uterine leiomyomas and their concentrations of human epididymis protein 4 (HE4),CA 125 and CA 19-9 were detected.The indices of diagnostic evaluation were calculated.Preoperative serum concentrations of HE4,CA125 and CA19-9 in endometrial carcinoma group were significantly higher than those of control group.The areas under curve of HE4,CA125 and CA19-9 were 0.736,0.615 and 0.661 respectively and that of combiued markers was 0.774.At a 90％ specificity,the sensitivities for HE4,CA125,CA19-9 were 55.0％,26.9％ and 30.1％ while that of combined markers was 56.2％.HE4 is an ideal tumor marker for endometrial cancer and combined detection improves diagnostic rate.

Objective To explore the expression of papillary thyroid carcinoma (PTC)-specific microRNAs in order to improve early diagnosis of PTC's and determine the invasiveness of PTC.Methods Thyroid samples from 51 cases were analyzed to investigate microRNA expression differences between benign and malignant thyroid nodules by using miRNA chip technique.The differences in the expression of microRNAs were validated by qRT-PCR,and their correlation with clinical and pathological features of PTC was analyzed.Results (1) qRT-PCR analysis showed that miR-30a-3p (U =60,P =0.003),miR-146b-5p(U =40,P =0.001) and miR-199b-5p (U =69,P =0.007) significantly different between benign and malignant tissues.(2) Expression of miR-199b-5p was significantly higher in PTC patients with margin invasion and of ipsilateral neck lymph node metastasis(P =0.010).Conclusions miR-199b-5p,miR-30a-3p and miR-146b-5p may be used to differentiate benign and malignant thyroid nodules; miR-199b-5p can help assess the invasiveness of PTC.

Objective To assess the value of computed tomgraphy (CT)in differential diagnosis between medullar thyroid carcinoma (MTC)and papillary thyroid carcinoma (PTC).Methods CT findings of 20 lesions in 16 MTC patients and 35 lesions in 35 PTC patients were retrospectively analyzed.All patients were confirmed by pathology exam.We investigated the shape,location,bitten cookie sign,calification and lymph node metastasis between the two groups of patients to summarize the sensitivity and specificity of regular shape for MTC or lesions located in lower thyroid lobe,bitten cookie sign,lymph node metastasis for PTC.Results Regular shape was more common in MTC patients than in PTC patients (X2=5.815,P=0.016),with sensitivity and specificity of 55％ and 77.1％ respectively.Lesions were located at lower thyroid(X2=10.732,P=0.001),bitten cookie sign(X2=18.832,P=0.000)and lymph node metastasis (X2=4.377,P=0.036)was significantly more common in PTC patients than in MTC patients,with sensitivity and specificity of 40％ (14/35)and 100％ (16/16),80％ (28/35)and 80％ (16/20),and 68.6％(24/35)and 62.5％(10/16)respectively.Calcification was not significantly different between MTC and PTC patients (X2=0.550,P=0.458).Conclusions CT plays an important role in differential diagnosis between MTC and PTC.Regular shape is helpful for the diagnosis of MTC.Leisions located at lower thyroid,with bitten cookie sign and lymph node metastasis are conductive to the diagnosis of PTC.