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Parathyroid adenoma

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https://www.readbyqxmd.com/read/28637440/acute-airway-compromise-due-to-parathyroid-tumour-apoplexy-an-exceptionally-rare-and-potentially-life-threatening-presentation
#1
Aoife Garrahy, David Hogan, James Paul O'Neill, Amar Agha
BACKGROUND: Spontaneous haemorrhage into a parathyroid adenoma is a rare and potentially life-threatening presentation. CASE PRESENTATION: We report the case of a 45 year old female recently diagnosed with primary hyperparathyroidism who presented with chest discomfort and acute airway compromise due to spontaneous extracapsular haemorrhage into a parathyroid adenoma. Computed tomography (CT) imaging showed a hypopharyngeal haematoma extending 10 cm into the superior mediastinum...
June 21, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28636744/parathyroid-carcinoma-in-a-patient-with-three-prior-parathyroid-adenomas
#2
Michael Goldenberg, Henry Crist, Darrin V Bann
No abstract text is available yet for this article.
June 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28614134/value-of-99mtc-mibi-spect-ct-parathyroid-imaging-and-ultrasonography-for-concomitant-thyroid-carcinoma
#3
Rui Guo, Jiqiu Wang, Min Zhang, Miao Zhang, Hongping Meng, Yifan Zhang, Biao Li
PURPOSE: We aimed to assess the frequency of carcinoma in cases with suspected parathyroid adenoma and test the value of Tc-methoxyisobutylisonitrile (Tc-MIBI) single-photon emission computed tomography/computed tomography (SPECT/CT) parathyroid imaging and neck ultrasonography in detecting concomitant thyroid carcinoma. PATIENTS AND METHODS: We enrolled 741 patients with clinically suspected parathyroid adenoma who underwent Tc-MIBI planer scans and SPECT/CT of the skull base, neck, and thorax; patients also underwent ultrasonography within 1 month before SPECT/CT...
June 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28609842/specifying-the-molecular-pattern-of-sporadic-parathyroid-tumorigenesis-the-y282d-variant-of-the-gcm2-gene
#4
Elena Marchiori, Maria Rosa Pelizzo, Monika Herten, Danyelle M Townsend, Domenico Rubello, Isabella Merante Boschin
Sporadic carcinoma of the parathyroid glands is a rare malignant neoplasia. The GCM2 gene encodes a transcription factor that is crucial to embryonic parathyroid development. The Y282D variant of GCM2 exhibits increased transcriptional activity, and the presence of this variant is significantly associated with a higher prevalence of primitive hyperparathyroidism. The present study investigated the prevalence of the Y282D variant of the GCM2 gene and its association with clinical parameters in patients with a definitive histological diagnosis of sporadic parathyroid carcinoma (SPC) or atypical adenoma (AA)...
June 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28600574/promoter-hypermethylation-inactivates-cdkn2a-cdkn2b-and-rassf1a-genes-in-sporadic-parathyroid-adenomas
#5
Ashutosh Kumar Arya, Sanjay Kumar Bhadada, Priyanka Singh, Naresh Sachdeva, Uma Nahar Saikia, Divya Dahiya, Arunanshu Behera, Anil Bhansali, Sudhaker D Rao
Cyclin D1, a G1-S phase regulator, is upregulated in parathyroid adenomas. Since cyclin-dependent kinase (CDK) inhibitors, CDKN2A and CDKN2B, and RASSF1A (Ras-association domain family 1, isoform A) are involved in G1-S phase arrest and act as potential tumor suppressor genes, we aimed to study potential methylation-mediated inactivation of these genes in parathyroid adenomas. Gene expressions of cyclin D1 (CCND1) and regulatory molecules (CDKN2A, CDKN2B and RASSF1A) was analysed in parathyroid adenoma tissues (n = 30)...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28579010/-maxillary-buccal-and-dental-expressions-of-hyperparathyroidisms
#6
Jean-Louis Wémeau, Catherine Cardot-Bauters
States of chronic parathyroid hypersecretion, related to a primitive parathyroid abnormality (adenoma, hyperplasia), or to a cause of chronic calcipenia (renal failure, vitamin D deficiency…) have a major impact on bone remodeling, alveolodental structures. Thinning of the lamina dura, maxillary or mandibular brown tumors, giant cell epulis are the most emblematic signs of the primary hyperparathyroidism. Other expressions are related to genetic factors such as fibrous tumors of the jaw in conjunction with mutations in the gene coding for parafibromin...
June 1, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28571792/papillary-carcinoma-of-the-thyroid-in-patients-with-primary-hyperparathyroidism-is-there-a-link
#7
M Beebeejaun, E Chinnasamy, P Wilson, A Sharma, N Beharry, G Bano
Primary hyperparathyroidism (PHPT) is present in up to 0.1% of the general population. The incidence is higher in women and increases with age. The majority of the cases is asymptomatic and up to 85% are due to single gland adenoma. Parathyroidectomy is the treatment of choice after localization of the hyperactive gland. Papillary Thyroid Carcinoma (PTC) is the most common cancer of the thyroid and constitutes more than 70% of thyroid malignancies. PTC can present as a single nodule or can be Multifocal. The incidence is higher in women...
June 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28569362/can-arfi-elastography-be-used-to-differentiate-parathyroid-from-thyroid-lesions
#8
A Chandramohan, M Therese, D Abhraham, T V Paul, P Jacob Mazhuvanchary
OBJECTIVES: To assess if elasticity score (ES) and shear wave velocity (SWV) measurement obtained using ARFI elastography can differentiate between parathyroid lesions and thyroid nodules. MATERIALS AND METHODS: ARFI elastography was performed on patients with primary hyperparathyroidism or solid thyroid nodules who were being considered for surgery using virtual touch quantification and virtual touch imaging (VTI) software. Only patients with surgical histopathology (47 parathyroid lesions, 38 benign thyroid nodules and 55 malignant thyroid nodules) were included for final analysis...
May 31, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28559945/sensitive-detection-of-a-small-parathyroid-adenoma-using-fluorocholine-pet-ct-a-case-report
#9
Thanseer N T K Padinhare-Keloth, Sanjay K Bhadada, Ashwani Sood, Rajender Kumar, Arunanshu Behera, Bishan D Radotra, Bhagwant R Mittal
Primary hyperparathyroidism is caused by parathyroid adenoma in the majority of cases and diagnosis is usually made biochemically. Pre-surgical localization of parathyroid adenoma is essential to limit the extent of surgery and avoid missing them at ectopic sites. Anatomical and functional imaging are used for the localization, but may fail to identify the small and ectopic parathyroid adenoma. We present a case of small sized ectopic parathyroid adenoma at unusual location detected by F-18 fluorocholine (FCH) PET/CT, where other imaging modalities failed...
June 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28554885/osteolytic-lesions-osteitis-fibrosa-cystica-in-the-setting-of-severe-primary-hyperparathyroidism
#10
Lee Jervis, Matthew James, Warwick Howe, Stephen Richards
A 58-year-old female patient presented with several weeks history of significant bilateral knee pain. Initial knee radiographs demonstrated lucencies of the bony cortex while extensive osteolytic lesions on a routine chest radiograph were suggestive of multiple myeloma or bony metastases. Biochemical investigation revealed primary hyperparathyroidism with renal insufficiency. A parathyroid adenoma was demonstrated on a neck ultrasound and sestamibi scan and subsequently confirmed by histology. We illustrate a case of primary hyperparathyroidism with osteitis fibrosa cystica and brown tumours which were initially mistaken for malignant disease...
May 28, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28553700/minimally-invasive-radioguided-parathyroid-surgery-using-low-dose-tc-99m-mibi-comparison-with-standard-high-dose
#11
Ali Jangjoo, Ramin Sadeghi, Zohreh Mousavi, Masoud Mohebbi, Mahtab Khaje, Mehdi Asadi
BACKGROUND: Surgery remains the most effective treatment for primary hyperparathyroidism (PHPT). Minimally invasive radioguided parathyroidectomy (MIRP) is a common technique for detecting and excising abnormal parathyroid glands. The aim of this study was to compare injections of low-dose and high-dose (99m) Tc methoxy isobutyl isonitrile (MIBI) for intraoperative localisation of parathyroid adenomas by means of a gamma probe in patients with primary hyperparathyroidism (PHPT). MATERIAL AND METHODS: Thirty patients with PHPT and a preoperative diagnosis of parathyroid adenoma were enrolled between 2010 and 2012...
May 29, 2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28553594/comparison-of-18f-fluorocholine-positron-emission-tomography-computed-tomography-and-four-dimensional-computed-tomography-in-the-preoperative-localization-of-parathyroid-adenomas-initial-results
#12
Sameer K Taywade, Nishikant A Damle, Abhishek Behera, K Devasenathipathy, Chandrasekhar Bal, Madhavi Tripathi, Shipra Agarwal, Nikhil Tandon, Sunil Chumber, V Seenu
OBJECTIVE: We aimed to compare the diagnostic accuracy of 18F-Fluorocholine (FCH)-positron emission tomography/computed tomography (PET/CT) and four-dimensional (4D)- CT in detection and localization of eutopic and ectopic parathyroid adenoma (PA) in patients with hyperparathyroidism. MATERIALS AND METHODS: Five patients with primary hyperparathyroidism underwent FCH-PET/CT after 60 min of 185 MBq of intravenous 18F-FCH administration. Images were acquired from head to mediastinum at 3 min per bed position...
May 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28553182/ultrastructure-of-hyperfunctioning-parathyroid-glands-does-it-explain-various-patterns-of-99m-tc-sestamibi-uptake
#13
Abdelhamid H Elgazzar, Jehoran T Anim, Shorouk F Dannoon, Medhat M Farghaly
The aim of this study was to correlate the uptake of (99m)Tc-methoxy-isobutyl-isonitrile (MIBI) with ultra-structural features of parathyroid adenomas. Twenty patients with proven primary hyperparathyroidism were evaluated prospectively. Preoperative double-phase (99m)Tc-MIBI scintigraphy was performed in all patients and the degree of tracer uptake by the parathyroid lesions was assessed visually and semi-quantitatively. The excised glands were examined histologically and ultrastructurally, and their features were correlated with the degree of the radiotracer uptake...
April 2017: World Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28546708/unilateral-exploration-for-parathyroid-adenoma
#14
Maddibande Ramachar Sreevathsa, Khyati Melanta
Between January 2012 to 2016, 20 patients with primary hyperparathyroidism underwent surgical exploration for presumed diagnosis of parathyroid adenoma. Nineteen patients underwent ultrasonography of neck and USG was found to be accurate in localizing the adenoma in 84.2%. Seventeen patients underwent sestamibi isotope scanning and imaging correlated with operative findings in 94.1%. Combined accuracy of ulrasound and sestamibi scan which was done in 17 patients was 95%. Seventeen patients underwent unilateral exploration and there was resolution of disease in 94...
June 2017: Indian Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28543268/sensitivity-of-3-dimensional-sonography-in-preoperative-evaluation-of-parathyroid-glands-in-patients-with-primary-hyperparathyroidism
#15
Susan J Frank, Adam E Goldman-Yassen, Tova Koenigsberg, Steven K Libutti, Mordecai Koenigsberg
OBJECTIVES: Preoperative localization of parathyroid adenomas in patients with primary hyperparathyroidism facilitates targeted surgery. We assessed the sensitivity of 3-dimensional (3D) sonography for preoperative localization of abnormal parathyroid glands. METHODS: We conducted a retrospective review of patients who underwent parathyroidectomy for primary hyperparathyroidism at a single site at our institution. We compared preoperative 2-dimensional (2D) sonography, 3D sonography, and sestamibi scans with final gland localization at surgery...
May 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28533644/atypical-parathyroid-adenoma-with-multiple-brown-tumors-as-initial-presentation-a-rare-entity
#16
V S Krishna Mohan, Manishi L Narayan, Arun Mukka, Bharath Bachimanchi, Amit Kumar Chowhan, B Vijayalakshmi Devi, Suresh Vaikkakara, Alok Sachan
Brown tumors seen in hyperparathyroidism are rare, non-neoplastic lesions because of abnormal bone metabolism, and they can mimic benign bone tumors or malignancy. Although biopsy is considered as the gold standard for diagnosis, it can be inconclusive. As the diagnosis of brown tumors is often challenging, a high index of suspicion is essential for diagnosis. We present a case of 21-year-old woman who presented with multiple painful bony lesions, which were initially misdiagnosed as fibrous dysplasia. Due to persistent bone pain and deterioration in her physical mobility, she was referred to tertiary care centre...
April 2017: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/28524839/surgery-for-ectopic-parathyroid-adenoma-in-lower-part-of-superior-mediastinum-through-a-transcervical-incision
#17
Xing Wang, Yi-Ming Zhu, Hui Huang, Li-Peng Zhang, Ye Zhang, Xiao-Lei Wang
No abstract text is available yet for this article.
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28506410/effectiveness-of-intraoperative-parathyroid-monitoring-iopth-in-predicting-a-multiglandular-or-malignant-parathyroid-disease
#18
C Dobrinja, G Santandrea, M Giacca, Elisabetta Stenner, Maurizio Ruscio, Nicolò de Manzini
AIM: The main goal of our study was to confirm the usefulness of intra-operative parathyroid hormone (PTH) monitoring (ioPTH) when using minimally invasive techniques for treatment of sporadic Primary hyperparathyroidism (pHTP). Furthermore, we aimed to evaluate if ioPTH monitoring may help to predict the etiology of primary hyperparathyroidism, especially in malignant or multiglandular parathyroid disease. METHODS: A retrospective review of 125 consecutive patients with pHPT who underwent parathyroidectomy between 2001 and 2016 at the Department of General Surgery was performed...
May 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28501573/alterations-of-dna-methylation-in-parathyroid-tumors
#19
REVIEW
Vito Guarnieri, Lucia Anna Muscarella, Chiara Verdelli, Sabrina Corbetta
Parathyroid tumors are common endocrine neoplasias associated with primary hyperparathyroidism, a metabolic disorder characterized by parathormone hypersecretion. Parathyroid neoplasia are frequently benign adenomas or multiple glands hyperplasia, while malignancies are rare. The epigenetic scenario in parathyroid tumors has just begun to be decoded: DNA methylation, histones and chromatin modifiers expression have been investigated so far. The main findings suggest that DNA methylation and chromatin remodeling are active and deregulated in parathyroid tumors, cooperating with genetic alterations to drive the tumor phenotype: the tumor suppressors menin and parafibromin, involved in parathyroid tumorigenesis, interact with chromatin modifiers, defining distinct epigenetic derangements...
May 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28491324/giant-parathyroid-adenoma-differential-aspects-compared-to-parathyroid-carcinoma
#20
Marta Araujo Castro, Ainhoa Abad López, Luz Martín Fragueiro, Nuria Palacios García
The 85% of cases of primary hyperparathyroidism (PHPT) are due to parathyroid adenomas (PA) and less than 1% to parathyroid carcinomas (PC). The PA usually measure <2 cm, weigh <1 g and generate a mild PHPT, whereas the PC usually exceeds these dimensions and are associated with a severe PHPT. However, giant PA (GPA), which is defined as those larger than 3 g, has been documented. Those may be associated with very high levels of PTH and calcium. In these cases, their differentiation before and after surgery with PC is very difficult...
2017: Endocrinology, Diabetes & Metabolism Case Reports
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