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parathyroid glands

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https://www.readbyqxmd.com/read/28105137/applicability-of-rapid-intraoperative-parathyroid-hormone-assay-through-fine-needle-aspiration-to-identify-parathyroid-tissue-in-thyroid-surgery
#1
Xue-Hai Bian, Shi-Jie Li, Le Zhou, Chun-Hai Zhang, Guang Zhang, Yan-Tao Fu, Hui Sun
Hypoparathyroidism is a frequent and serious complication of thyroid surgery. Identification and preservation of the parathyroid glands are key factors in managing hypoparathyroidism. The aim of the present study was to investigate the efficacy of rapid intraoperative parathyroid hormone (rIO-PTH) assay levels through fine needle aspiration (FNA) in identifying parathyroids as a parameter in thyroid surgery. rIO-PTH assay through FNA and frozen section examination were performed on 194 suspected parathyroids anatomical structures from 50 consecutive patients undergoing thyroidectomy (rIO-PTH group)...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104949/enlarged-parathyroid-glands-with-variable-sonomorphology-in-a-case-of-tertiary-hyperparathyroidism-sonographic-histopathologic-correlation
#2
Yashant Aswani, Varsha Dhume, Ravi Varma, Shenaz Saifi
The typical sonomorphology of homogeneously hypoechoic texture of an enlarged parathyroid gland (PG) is a reflection of uniform arrangement of the parathormone-producing chief cells. A variable cellular arrangement, hemorrhage, fibrosis, and adipocytes cause heterogeneous appearance. We describe a case of a 32-year-old male, a case of tertiary hyperparathyroidism, with increased serum parathormone levels, hypercalcemia, and enlargement of all four PGs, albeit with differing morphology. The left lower gland had two nodules, namely, superior and inferior...
October 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28094278/persistent-fibroblast-growth-factor-23-signalling-in-the-parathyroid-glands-for-secondary-hyperparathyroidism-in-mice-with-chronic-kidney-disease
#3
Kazuki Kawakami, Ai Takeshita, Kenryo Furushima, Masayasu Miyajima, Ikuji Hatamura, Makoto Kuro-O, Yasuhide Furuta, Kazushige Sakaguchi
Secondary hyperparathyroidism, in which parathyroid hormone (PTH) is excessively secreted in response to factors such as hyperphosphataemia, hypocalcaemia, and low 1,25-dihydroxyvitamin D (1,25(OH)2D) levels, is commonly observed in patients with chronic kidney disease (CKD), and is accompanied by high levels of fibroblast growth factor 23 (FGF23). However, the effect of FGF23 on the parathyroid glands (PG) remains controversial. To bind to FGF receptors, FGF23 requires αKlotho, which is highly expressed in the PG...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28090276/overexpression-of-recombinant-human-teriparatide-rhpth-1-34-in-escherichia-coli-an-innovative-gene-fusion-approach
#4
Nahid Bakhtiari, Zahra Amini Bayat, Sepideh Sagharidouz, Mohsen Vaez
BACKGROUND: Parathyroid hormone is an 84-amino acid peptide secreted by the parathyroid glands. Its physiological role is maintenance of normal serum calcium level and bone remodeling. Biological activity of this hormone is related to N-terminal 1-34 amino acids. The recombinant form of hormone (1-34) has been approved for treatment of osteoporosis from 2002. In this study, a novel fusion partner has been developed for preparation of high yield recombinant 1-34 amino acids of hPTH. METHODS: Novel nucleotide cassette designed encoding a chimeric fusion protein comprising of a fusion partner consisting of a His-tag in N-terminal, 53 amino acids belong to Escherichia coli (E...
January 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28070481/lung-adenocarcinoma-and-adrenocortical-carcinoma-in-a-patient-with-multiple-endocrine-neoplasia-type-1
#5
Nobumasa Ohara, Masanori Kaneko, Masahiro Ikeda, Fumio Ishizaki, Kazuya Suzuki, Ryo Maruyama, Takeshi Komeyama, Kazuhiro Sato, Kenichi Togashi, Hiroyuki Usuda, Yuto Yamazaki, Hironobu Sasano, Kenzo Kaneko, Kyuzi Kamoi
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disorder caused by heterozygous germline mutations in the tumor suppressor gene MEN1, which encodes a nuclear protein, menin. MEN1 is characterized by the combined occurrence of tumors involving the pituitary gland, pancreatic islets, and parathyroid glands. Additionally, patients with MEN1 often exhibit adrenal tumors. Although most MEN1-associated tumors are benign, malignant lesions arising in these endocrine organs have been reported. Additionally, malignant diseases of non-endocrine organs concomitant with MEN1 have also been reported...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28064342/failure-of-fragmented-parathyroid-gland-autotransplantation-to-prevent-permanent-hypoparathyroidism-after-total-thyroidectomy
#6
Leyre Lorente-Poch, Juan Sancho, Jose Luis Muñoz, Lander Gallego-Otaegui, Carlos Martínez-Ruiz, Antonio Sitges-Serra
PURPOSE: Parathyroid autotransplantation during total thyroidectomy leads to higher rates of postoperative hypocalcaemia. It has been argued, however, that it prevents permanent hypoparathyroidism. The impact of autografted normal parathyroid gland fragments on long-term parathyroid status has not been assessed properly. To clarify this, the short- and long-term parathyroid function was assessed in patients with three glands remaining in situ after total thyroidectomy, in whom the fourth gland was either autotransplanted (Tx) or accidentally resected (AR)...
January 7, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28054194/ultrasound-based-scores-as-predictors-for-nodular-hyperplasia-in-patients-with-secondary-hyperparathyroidism-a-prospective-validation-study
#7
Jill Gwiasda, Alexander Kaltenborn, Jörg A Müller, Michaela Serttas, Georg W F Scheumann, Harald Schrem, Mark D Jäger
PURPOSE: Former studies evaluated echostructural and vascular patterns in ultrasound of the parathyroid gland to identify nodular hyperplasia in patients with secondary hyperparathyroidism due to chronic kidney disease. This prospective study aims to externally validate suggested ultrasound classifications. METHODS: Parathyroid glands of 27 patients with secondary hyperparathyroidism undergoing parathyroidectomy were prospectively analyzed. Ultrasound including Doppler imaging was performed 1 day prior to surgery...
January 4, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/28035705/a-rare-case-of-cutaneous-oncocytic-hidradenoma
#8
Shivani P Reddy, Kim Chong, David S Cassarino
Oncocytes are epithelial cells characterized by their abundant eosinophilic and finely granular cytoplasm. Their histologic appearance is due to excessive amounts of cytoplasmic mitochondria. Oncocytes generally occur in the setting of benign neoplasms. Oncocytomas, or tumors composed primarily of oncocytes, are typically found in the kidneys. Other common sites include the salivary, thyroid, and parathyroid glands. Oncocytic metaplasia has only been rarely reported in various cutaneous neoplasms. We report a case of an elderly male presenting with a 5 millimeter erythematous papule on his left scalp, who underwent a shave biopsy showing a nodular, dermal-based adnexal tumor with prominent ductal differentiation, composed of multiple small, well-formed lumina surrounded by enlarged, bland-appearing epithelioid cells...
December 30, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28033305/a-prospective-cohort-study-of-novel-functional-types-of-parathyroid-glands-in-thyroidectomy-in-situ-preservation-or-auto-transplantation
#9
Qiuxia Cui, Zhihua Li, Deguang Kong, Kun Wang, Gaosong Wu
The best method of preventing hypoparathyroidism after thyroidectomy is to keep parathyroid glands in situ. However, hypoparathyroidism still regularly occurs with the existing parathyroid classification system, and the incidence of permanent hypoparathyroidism has not been reduced. We created a novel system for classifying parathyroid glands that can guide parathyroid preservation in thyroidectomy.We prospectively observed parathyroid glands using the new system in 218 neck surgeries, compared with 132 under the traditional system from January 2014 to September 2015 at a single clinic center...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28033216/incremental-value-of-18f-fluorocholine-pet-ct-in-the-localization-of-double-parathyroid-adenomas
#10
Paul Lalire, Sang Ly, Sophie Deguelte, Martine Patey, David Morland
A 73-year-old man displaying primary hyperparathyroidism with severe hypercalcemia (Ca: 4.1 mmol/l, PTH > 600 pmol/l) was referred for preoperative localization of a parathyroid adenoma. Tc-pertechnetate and Tc-sestaMIBI dual tracer scintigraphy displayed a mild focal uptake in the projection of the right thyroid lobe with negative ultrasonography. F-Fluorocholine PET/CT was quickly performed considering this discrepancy and not only confirmed the scintigraphic findings but also revealed a second contralateral focus of increased uptake, both later confirmed by operative consideration (the two other parathyroid glands are considered normal by the surgeon), pathology, and intraoperative parathyroid hormone assessment...
December 28, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28032671/efficacy-and-safety-of-ultrasound-guided-radiofrequency-ablation-of-hyperplastic-parathyroid-gland-for-secondary-hyperparathyroidism-associated-with-chronic-kidney-disease
#11
Chengzhong Peng, Zhengxian Zhang, Jibin Liu, Hongyu Chen, Xiao Tu, Rihong Hu, Jun Ni, Ning Weng, Haisu Pang, Zhengmei Xue
BACKGROUND: The purpose of this study was to determine if ultrasound-guided radiofrequency ablation (RFA) of hyperplastic parathyroid glands could be used to treat secondary hyperparathyroidism (HPT) in patients with chronic kidney disease. METHODS: RFA of the hyperplastic parathyroid glands was performed in 34 patients with secondary HPT. Intact parathyroid hormone (iPTH), calcium, and phosphorus were measured. The outcome was based on the ablation extent (ie, 4, 3, and 1-2 glands)...
December 29, 2016: Head & Neck
https://www.readbyqxmd.com/read/28032553/using-parathyroid-hormone-spikes-during-parathyroidectomy-to-guide-intraoperative-decision-making
#12
Azadeh A Carr, Tina W Yen, Stuart D Wilson, Douglas B Evans, Tracy S Wang
BACKGROUND: Intraoperative parathyroid hormone (IOPTH) level monitoring is a useful adjunct to parathyroidectomy for primary hyperparathyroidism (pHPT). Occasionally, increases ("spikes") in IOPTH levels from the preoperative baseline parathyroid hormone may occur, which may lead to longer operative times or more extensive neck exploration or both. The aim of this study was to determine if the extent of IOPTH level increase predicts single gland disease (SGD). METHODS: This is a retrospective review of a prospective parathyroid database of patients undergoing parathyroidectomy for sporadic pHPT from 1999-2013...
October 14, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/28032220/transoral-endoscopic-parathyroidectomy-vestibular-approach-a-novel-scarless-parathyroid-surgery
#13
Thanyawat Sasanakietkul, Pornpeera Jitpratoom, Angkoon Anuwong
BACKGROUND: Natural orifice transluminal endoscopic surgery developed for neck surgery become increasing popular. Herein, an innovative transoral endoscopic parathyroidectomy vestibular approach (TOEPVA) was developed for primary hyperparathyroidism (PHPT) and renal hyperparathyroidism (rHPT). METHODS: Incisions were made at the oral vestibule under the inferior lip. A 10-mm trocar was inserted through the center of the oral vestibule with two 5-mm trocars laterally...
December 28, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/28017299/is-intraoperative-parathyroid-hormone-monitoring-necessary-for-primary-hyperparathyroidism-with-concordant-preoperative-imaging
#14
Iuliana D Bobanga, Christopher R McHenry
BACKGROUND: The purpose of this study was to determine if intraoperative parathyroid hormone (PTH) monitoring is necessary in patients with concordant ultrasound and sestamibi imaging. METHODS: Clinical factors, intraoperative findings and outcome were correlated with imaging results in patients with primary hyperparathyroidism who underwent parathyroidectomy with concordant ultrasound and sestamibi imaging. RESULTS: There were 127 patients with primary hyperparathyroidism and concordant imaging who underwent parathyroidectomy...
November 23, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/28008293/hormonal-and-echocardiographic-abnormalities-in-adult-patients-with-sickle-cell-anemia-in-bahrain
#15
Taysir S Garadah, Ahmed A Jaradat, Mohammed E Alalawi, Adla B Hassan
BACKGROUND: Adrenal, thyroid, and parathyroid gland hormonal changes are recognized in children with homozygous (HbSS) sickle-cell anemia (SCA), but are not clear in adult patients with SCA. AIM: To assess the metabolic and endocrine abnormalities in adult patients with SCA and evaluate left ventricular (LV) systolic and diastolic functions compared with patients with no SCA and further study the relationship between serum levels of cortisol, free thyroxine (T4), and testosterone with serum ferritin...
2016: Journal of Blood Medicine
https://www.readbyqxmd.com/read/28003944/role-of-intraoperative-nerve-monitoring-during-parathyroidectomy-to-prevent-recurrent-laryngeal-nerve-injury
#16
REVIEW
Usman Ghani, Salman Assad, Shuja Assad
Injury to the recurrent laryngeal nerve (RLN) is a well known, though less frequent, complication of parathyroid surgery. In recent years, the use of intraoperative nerve monitoring (IONM) has gained popularity amongst surgeons when operating on thyroid gland; however, its utilization in parathyroid surgery is not established. This trend continues to rise, despite multiple studies documenting no statistically significant difference that IONM decreases the incidence of RLN injury. Most surgeons use this technology as an adjunct to visualization alone for identification of RLN...
November 15, 2016: Curēus
https://www.readbyqxmd.com/read/28003924/intrathyroidal-clear-cell-tumor-of-parathyroid-origin-with-review-of-literature
#17
Daniela Pirela, Daniela Treitl, Siba El Hussein, Robert Poppiti, Thomas Mesko, Alex Manzano
Water-clear cell adenoma (WCCA) of the parathyroid gland is an exceedingly rare neoplasm. To date, 17 cases have been reported in the literature, with only one of them being intrathyroidal. Here we report a case of a 34-year-old woman who presented for evaluation of a goiter and was found to have a thyroid nodule and abnormal thyroid function tests (TFT). Fine needle aspiration biopsy of the nodule revealed thyroid follicular cells without atypia and subsequent Afirma® Gene Expression Classifier (GEC) testing results were suspicious for malignancy...
2016: Case Reports in Pathology
https://www.readbyqxmd.com/read/27989915/application-of-carbon-nanoparticles-accelerates-the-rapid-recovery-of-parathyroid-function-during-thyroid-carcinoma-surgery-with-central-lymph-node-dissection-a-retrospective-cohort-study
#18
Bin Wang, Zhi-Peng Du, Nian-Cun Qiu, Miao-E Liu, Sheng Liu, Dao-Zhen Jiang, Wei Zhang, Ming Qiu
BACKGROUND AND OBJECTIVES: The aim of this study was to evaluate the efficacy of carbon nanoparticles in identifying lymph nodes and promoting parathyroid gland function recovery after thyroid carcinoma surgery along with central lymph node dissection. METHODS: A total of 231 patients who underwent thyroid carcinoma surgery combined with central lymph node dissection were divided into two groups: the CN group (intraoperative carbon nanoparticles injections) and the control group (no injection)...
October 27, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27979480/location-of-abnormal-parathyroid-glands-lessons-from-810-parathyroidectomies
#19
Melissa LoPinto, Gustavo A Rubio, Zahra F Khan, Tanaz M Vaghaiwalla, Josefina C Farra, John I Lew
BACKGROUND: Primary hyperparathyroidism (pHPT) is commonly treated with targeted parathyroidectomy (PTX) guided by preoperative imaging and intraoperative parathormone monitoring. Despite advanced imaging techniques, failure of parathyroid localization still occurs. This study determines the anatomical distribution of single abnormal parathyroid glands, which may help direct the surgeon in PTX when preoperative localization is unsuccessful. METHODS: A retrospective review of prospectively collected data of 810 patients with pHPT who underwent initial PTX at a tertiary medical center was performed...
January 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27964920/intraoperative-near-infrared-fluorescence-imaging-of-thymus-in-preclinical-models
#20
Hideyuki Wada, Hoon Hyun, Homan Kang, Julien Gravier, Maged Henary, Mark W Bordo, Hak Soo Choi, John V Frangioni
BACKGROUND: There are currently no thymus-specific contrast agents for biomedical imaging. Thus, finding ectopic thymic tissue during certain operations is extremely difficult. The purpose of the present study was to determine if near-infrared (NIR) fluorescence imaging could provide high sensitivity, real-time identification of thymic tissue during the operation. METHODS: After initial in vivo screening of a 315-compound NIR fluorophore library for thymic uptake, methylene blue and five different 700-nm emitting candidate molecules were injected into CD-1 mice for quantitation of the signal-to-background ratio as a function of kinetics and dosing...
December 10, 2016: Annals of Thoracic Surgery
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