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Surgical treatment of secondary hyperparathyroidism in patients with chronic renal failure

Chinese Journal of Endocrine Surgery.2017;11(4):349-352. doi:10.3760/cma.j.issn.1674-6090.2017.04.023

Secondary hyperparathyroidism (SHPT) is a common complication in patients with chronic renal failure (CRF).Medical treatment may be the first choice for most SHPT patients,but parathyroidectomy (PTX) is neededwhen medical treatment doesn't work in patients with refractory SHPT.However,there is no strong evidence to support which surgical procedure is the most effective one for patients with SHPT.An interdisciplinary discussion between nephrologists and surgeons is needed when choosing a preferred surgical method for refractory SHPT patients.The factors must be discussed including:the patient's age,the underlying kidney disease,clinical symptoms,the level of intact parathyroid hormones (iPTH) and blood calcium,the patient's ability to obtain and comply with medication treatment and the estimated duration of dialysis before kidney transplantation.Refractory SHPT patients will benefit from the surgical operation treatment and reoperation of recurrent SHPT is still an ideal treatment method.

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A review of intraoperative identification methods of parathyroid glands

Gaofei HE ; Li GAO ; Chunyi SONG ; Jianbiao WANG

Chinese Journal of Endocrine Surgery.2017;11(4):345-348. doi:10.3760/cma.j.issn.1674-6090.2017.04.022

Hyperparathyroidism is an important complication of thyroid surgery.Identification is the premise of intraoperative pretection.At present,identification of the parathyroid gland relies on personal experience of surgeons.Amplifying display of endoscope or surgical magnifying glass,the use of dyeing agent such as methylene blue,nanocarbon,5-ALA or BB5-G1,the use of radionuclide imaging and contact endoscope,and biopsy like intraoperative frozen pathological examination and FNA are all important trials.This article is going to make a review of the methods.

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One case of 11 beta hydroxylase deficiency associated with testicular adrenal residues tumor

Zefen LU ; Zhiying ZHANG ; Shanshan LIANG ; Longjiang TIAN ; Zhigang ZHANG ; Qing HE ; Jianfeng LIU ; Fang BIAN ; Shaoxiong ZHENG

Chinese Journal of Endocrine Surgery.2017;11(4):343-344. doi:10.3760/cma.j.issn.1674-6090.2017.04.021

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One case of coexistence of primary thyroid squamous cell carcinoma with papillary thyoid carcinoma

Guibin ZHENG ; Lixin JIANG ; Jinyao NING ; Baoyuan LI ; Dong WANG ; Haiqing SUN ; Haitao ZHENG

Chinese Journal of Endocrine Surgery.2017;11(4):337-339. doi:10.3760/cma.j.issn.1674-6090.2017.04.018

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234 cases of parathyroid carcinoma

Peisong WANG ; Shuai XUE ; Shuo WANG ; Xianying MENG ; Guimin WANG ; Wei MENG ; Jia LIU ; Zhe HAN ; Guang CHEN

Chinese Journal of Endocrine Surgery.2017;11(4):334-337. doi:10.3760/cma.j.issn.1674-6090.2017.04.017

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Diagnosis and treatment of medullary thyroid microcarcinoma

Haizhen CHEN ; Xi CHEN ; Chunhui LYU ; Xiaohui SHEN

Chinese Journal of Endocrine Surgery.2017;11(4):326-329. doi:10.3760/cma.j.issn.1674-6090.2017.04.015

Objective To investigate the clinical features,diagnosis and treatment of medullary thyroid microcarcinoma (MTMC).Methods The clinical data of 14 patients with MTMC from Mar.2012 to Sep.2016 were retrospectively reviewed.All cases were treated with surgery and pathologically proved to be MTMC.Results All patients were sporadic MTMC.Calcitonin and CEA levels were measured before surgery in 11 patients.The median values were 81.61 (3.36-1187) pg/ml and 7.42 (0.81-90.75) ug/ml,respectively.All patients were followed up postoperatively.During a median follow-up of 24 months (8-63 months),no death happened.Regional lymph node metastasis occurred in 8 patients (57.14％),and lateral lymph node metastasis in 5 cases (35.71％).The rate of postoperative calcitonin abnormal was significantly higher in patients with lateral lymph node metastasis (P＜0.01).6 cases (42.86％) had abnormal postoperative calcitonin,among whom 5 cases had preoperative baseline calcitonin level higher than 100 pg/ml.Patients having abnormal postoperative calcitonin suffered from higher calcitonin and CEA baseline (P＜0.05).The tumor size was similar in two groups (P＞0.05).Conclusions For patients with thyroid nodules,preoperative screen of calcitonin can effectively detect MTC.Patients with elevated CEA also need to exclude the possibility of MTC.Compared with tumor size,calcitonin baseline is more important to surgical options and postoperative outcomes.Lateral lymph node metastasis,baseline calcitonin ＞100 pg/ml indicates abnormal postoperative calcitonin.

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Expression of minichromosomes maintain protein 5, 7 in anaplastic thyroid carcinoma and its biological research

Xiaohui XU ; Li YANG ; Ping CHEN ; Xiaojuan ZHENG ; Yangmiao HUANG

Chinese Journal of Endocrine Surgery.2017;11(4):322-325,329. doi:10.3760/cma.j.issn.1674-6090.2017.04.014

Objective To cast light on the mechanisms governing anaplastic thyroid carcinoma (ATC) and to evaluate the minichromosomes maintain protein (MCM) 5 and MCM7 expression in human normal thyroid (NT),papillary thyroid carcinoma (PTC),and ATC samples,as well as in primary culture cells.Methods We tested the expression of MCM5,MCM7and PCNA in NT,PTC and ATC by immunohistochemistry.We used Western blot and Northern blot to test the expression of MCM5,and MCM7.ATC cells were transfected with MCM7 siRNA,and Western blot was used to examine the change of the expression of MCM7.Results In ATC samples,MCM5 had high expression in 65％ patients,and MCM7 had high expression in 73％ patients.The expression of MCM5 and MCM7 in NT and PTC samples were very low which can be ignored.In ATC cells,high MCM5 and MCM7 expression was paralleled by high levels of MCM2 and MCM6.Inhibition of MCM7 protein levels by small inhibitory duplex RNAs could reduce the rate of DNA synthesis in ATC cells.Conclusion MCM protein expression is upregulated in ATC and leads to excessive proliferation of ATC.

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Application of core needle biopsy guided by ultrasound in diagnosis of thyroid nodule

Kun ZHANG ; Yao YAO ; Guofeng QU ; Wei WANG ; Pei WANG ; Susheng CAO

Chinese Journal of Endocrine Surgery.2017;11(4):311-315. doi:10.3760/cma.j.issn.1674-6090.2017.04.012

Objective To explore the role of ultrasound-guided core needle biopsy in diagnosis and treatment of thyroid nodules.Methods 778 cases undergoing ultrasound-guided core needle biopsy in our department from Jan.2012 to Dec.2014 were retrospectively analyzed,and the sensitivity,specificity and accuracy were calculated.Results All the patients were operated successfully.Except for 21 nodules undiagnosed,16.4％ (124/757) were histologically diagnosed as malignant and 83.6％ (633/757) were benign.15 samples of the 124 malignant nodules were less than 10 millimeter in diameter.The sensitivity,specificity and accuracy were 100％,94.8％ and 95.6％,respectively.Of the ultrasound features,blood flow,boundary,internal situation and calcification were statistically significant between benign and malignant nodules,but not so between the groups of different greatest dimentions.Conclusion Ultrasound-guided core needle biopsy is safe and effective for obtaining thyroid nodule tissue,and it is helpful for diagnosis of thyroid diseases.

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Reasons for misdiagnosis of contrast-enhanced ultrasound in identifying thyroid nodules

Lili HUANG ; Dehua KONG ; Qi ZHOU ; Xiaoying LEI ; Jue JIANG ; Hongli ZHANG

Chinese Journal of Endocrine Surgery.2017;11(4):307-310. doi:10.3760/cma.j.issn.1674-6090.2017.04.011

Objective To investigate the reason for misdiagnosis of real-time contrast-enhanced ultrasound (CEUS) in identifying benign and malignant thyroid nodules and the impact of nodule size and calcification on CEUS result.Methods Retrospective analysis were carried out in 331 cases of thyroid disease patients with 421 nodules.All the nodules were performed CEUS and confirmed by pathology.Results In the total of 421 nodules,33 nodular goiters were misdiagnosed as thyroid carcinoma.8 nodular goiters were misdiagnosed as thyroid adenoma.8 thyroid carcinomas were misdiagnosed as nodular goiter,2 thyroid carcinomas were misdiagnosed as thyroid adenoma.The accuracy of diagnosis for thyroid benign and malignant lesions by CEUS was 87.89％,and the misdiagnosis rate was 12.11％.The size of the thyroid nodule and the form of calcification had influence on diagnosis.In the group with diameter of the nodule less than 10 mm,the misdiagnosis rate was higher compared with the other two groups,and the difference was statistically significant (P＜0.05).In addition,the misdiagnosis rate in the group with bulky calcification was higher than microcalcifications group,and the difference was statistically significant (P＜0.05).Conclusion The size of the thyroid nodule and the form of calcification have some impact on diagnosis of CEUS.To make clear the reason for misdiagnosis is beneficial to improve the diagnostic level of thyroid diseases.

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Value of CT to assess calcification patterns in thyroid nodules

Peiying WEI ; Yanyan SHU ; Zhijiang HAN ; Dingcun LUO

Chinese Journal of Endocrine Surgery.2017;11(4):301-306. doi:10.3760/cma.j.issn.1674-6090.2017.04.010

Objective To assess the value of CT in identification and diagnosis of benign and malignant calcified thyroid nodules.Methods Retrospective analysis was performed on the CT data of 313 surgically and pathologically confirmed cases with 378 calcified nodules.Based on the size,morphology,and number,calcification was divided into microcalcification (d≤2 mm and axis displayed in only one cross-section),coarse calcification (d＞2 mm or displayed in two or more cross-sections),annular calcification (arc or annular),and multiple microcalcifications (solitary multiple microcalcification without a soft tissue lump);a distribution of microcalcification,coarse calcification,and annular calcification as well as a clearer enhanced periphery or internal calcification than nonenhanced data in benign and malignant thyroid nodules were observed.Results The 378 nodules consisted of 259 benign nodules (68.5％) (all were nodular goiters) and 119 malignant nodules (31.5％) (including 111 papillary thyroid carcinomas,4 follicular carcinomas,3 medullary thyroid carcinomas and 1 lymphoma).Microcalcification was more common in malignant nodules (MNs) than in benign nodules (BNs),with a rate of 43.6％ vs 12.4％,respectively (P≤0.05),and its sensitivity,specificity,positive predicted value,and negative predicted value were 42.9％,87.6％,61.4％ and 76.9％,respectively.Coarse calcification,annular calcification,and clearer enhanced periphery or internal calcification than nonenhanced data were more common in BNs than in MNs,with rates of 52.9％ vs 20.2％ (P≤0.05),66.0％ vs 42.0％ (P≤0.05) and 43.2％ vs 19.3％ (P≤0.05),respectively,whose sensitivity,specificity,positive predicted value and negative predicted value were 66.0％ vs 22.4％ vs 43.2％,58.0％ vs 86.6％ vs 80.7％,77.4％ vs 78.4％ vs 83％,and 43.9％ vs 33.9％ vs 39.8％,respectively.Two multiple microcalcifications without a soft tissue lump were MNs (papillary thyroid carcinoma).Conclusions Microcalcification and multiple calcifications are conducive to the diagnosis of MNs,whereas coarse calcification,annular calcification,and clearer enhanced periphery or internal calcification than nonenhanced data benefit the diagnosis of BNs,but the low specificity and high false positive rate suggest that the judgment of BNs or MNs should not depend on coarse calcification alone.

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