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Parathyroid cancer

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https://www.readbyqxmd.com/read/28902384/-multiple-endocrine-neoplasia
#1
Ludwig Schaaf, Friedhelm Raue
Multiple endocrine neoplasia type 1 and 2 are hereditary cancer syndromes. They are characterized by the occurrence of many benign and malignant tumor types, in MEN1 parathyroid tumors, pituitary tumors, and pancreas tumors, in MEN2 medullary thyroid carcinoma, pheochromocytoma, and parathyroid tumors. The autosomal dominant inherited tumor syndromes are caused by mutations in the MEN1 gene, a tumor suppressor gene, and mutations in the RET gene, an activated oncogene, in MEN2. The clinical expression of the different tumors can vary within and between families, with a good genotype-phenotype correlation in MEN2...
September 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28901272/disorders-of-mechanisms-of-calcium-metabolism-control-as-potential-risk-factors-of-prostate-cancer
#2
Dorota Skrajnowska, Barbara Bobrowska-Korczak, Andrzej Tokarz
Prostate cancer significantly affects the overall morbidity and mortality of malignant tumours in highly developed countries. Important risk factors include family predisposition and regional, racial and dietary determinants. The scientific literature contains a great deal of data on the role of calcium and dairy products in general in the process of neoplastic transformation of the prostate. This is most likely linked to the fact that changes in the concentration of calcium ions control such varied life processes as secretion of hormones and neurotransmitters, the level of cyclic nucleotides, and cell growth, division and differentiation...
September 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28900835/osteitis-fibrosa-cystica-a-forgotten-radiological-feature-of-primary-hyperparathyroidism
#3
Waldemar Misiorowski, Izabela Czajka-Oraniec, Magdalena Kochman, Wojciech Zgliczyński, John P Bilezikian
Although bone disease and stone disease are the universally accepted classical manifestations of primary hyperparathyroidism, clinical parathyroid bone disease is rarely seen today in the United States (<5% of patients) and Western Europe. Nevertheless, in a given patient, classical skeletal involvement can be the first sign of primary hyperparathyroidism, but not recognized because it is not usually included, anymore, in the differential diagnosis of this manifestation of skeletal disease. We describe four cases of primary hyperparathyroidism in which the first clinical manifestation of the disease was a pathological fracture that masqueraded as a malignancy...
September 12, 2017: Endocrine
https://www.readbyqxmd.com/read/28894263/the-parathyroid-hormone-regulates-skin-tumour-susceptibility-in-mice
#4
Kazuhiro Okumura, Megumi Saito, Yasuhiro Yoshizawa, Haruka Munakata, Eriko Isogai, Ikuo Miura, Shigeharu Wakana, Midori Yamaguchi, Hiroshi Shitara, Choji Taya, Andrew C Karaplis, Ryo Kominami, Yuichi Wakabayashi
Using a forward genetics approach to map loci in a mouse skin cancer model, we previously identified a genetic locus, Skin tumour modifier of MSM 1 (Stmm1) on chromosome 7, conferring strong tumour resistance. Sub-congenic mapping localized Parathyroid hormone (Pth) in Stmm1b. Here, we report that serum intact-PTH (iPTH) and a genetic polymorphism in Pth are important for skin tumour resistance. We identified higher iPTH levels in sera from cancer-resistant MSM/Ms mice compared with susceptible FVB/NJ mice...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878134/prevention-of-breast-cancer-skeletal-metastases-with-parathyroid-hormone
#5
Srilatha Swami, Joshua Johnson, Lance A Bettinson, Takaharu Kimura, Hui Zhu, Megan A Albertelli, Rachelle W Johnson, Joy Y Wu
Advanced breast cancer is frequently associated with skeletal metastases and accelerated bone loss. Recombinant parathyroid hormone [teriparatide, PTH(1-34)] is the first anabolic agent approved in the US for treatment of osteoporosis. While signaling through the PTH receptor in the osteoblast lineage regulates bone marrow hematopoietic niches, the effects of anabolic PTH on the skeletal metastatic niche are unknown. Here, we demonstrate, using orthotopic and intratibial models of 4T1 murine and MDA-MB-231 human breast cancer tumors, that anabolic PTH decreases both tumor engraftment and the incidence of spontaneous skeletal metastasis in mice...
September 7, 2017: JCI Insight
https://www.readbyqxmd.com/read/28876685/a-histopathological-audit-of-hyperparathyroidism-in-the-south-african-setting
#6
A Hoosain, T E Luvhengo, C Mitchell, M Schamm
BACKGROUND: Hyperparathyroidism is a common endocrine disorder. Parathyroidectomy is indicated for primary and tertiary hyperparathyroidism. Parathyroid adenoma is the cause in close to 85% of cases of primary hyperparathyroidism. METHOD: An audit based on histopathology records of patients who had parathyroidectomy from January 2011 to December 2015 in academic hospitals linked to Wits was conducted. Data collected included patients' demographics and histopathological findings...
June 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28860152/proteasome-inhibitor-bortezomib-is-a-novel-therapeutic-agent-for-focal-radiation-induced-osteoporosis
#7
Abhishek Chandra, Luqiang Wang, Tiffany Young, Leilei Zhong, Wei-Ju Tseng, Michael A Levine, Keith Cengel, X Sherry Liu, Yejia Zhang, Robert J Pignolo, Ling Qin
Bone atrophy and its related fragility fractures are frequent, late side effects of radiotherapy in cancer survivors and have a detrimental impact on their quality of life. In another study, we showed that parathyroid hormone 1-34 and anti-sclerostin antibody attenuates radiation-induced bone damage by accelerating DNA repair in osteoblasts. DNA damage responses are partially regulated by the ubiquitin proteasome pathway. In the current study, we examined whether proteasome inhibitors have similar bone-protective effects against radiation damage...
August 31, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28819506/-parathyroid-carcinoma-about-a-case-and-review-of-the-literature
#8
REVIEW
Naourez Kolsi, Sondos Jellali, Jamel Koubaa
Parathyroid carcinoma is a very rare malignant tumor of the parathyroid gland. Clinically, this cancer is characterized by the presence of severe primary hyperparathyroidism. Diagnosis is based on histological examination but is not always easy. Surgery is the treatment of choice. We report the case of a 59-year old woman with a personal history of arterial hypertension and of recurrent renal lithiasis, presenting with diffuse bone pain associated with asthenia. Neck examination showed hard basi-cervical swelling with nonpalpable lower edge...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28818283/understanding-readmissions-following-operations-of-the-thyroid-and-parathyroid-glands
#9
Karole Collier, John Sataloff, Chris Wirtalla, Lindsay Kuo, Giorgos C Karakousis, Rachel R Kelz
BACKGROUND: In anticipation of bundled-payment models for thyroid and parathyroid disease, a better understanding of resource utilization following surgery is required. We sought to characterize the use of hospital services following such operations using an analysis of readmissions. METHODS: Patients age 18+years who underwent a thyroid or parathyroid operation in CA or NY (2008-2011) were classified by procedure type. Primary outcome was readmission within 90 days...
September 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28806048/electrolytes-calcium-disorders
#10
Craig Barstow
A normal serum calcium level is 8 to 10 mg/dL. The diagnosis of hypercalcemia (ie, levels 10.5 mg/dL or greater) should be confirmed with an albumin-adjusted or ionized calcium level. The two most common causes of hypercalcemia are hyperparathyroidism and malignancy. Drugs, notably lithium and thiazide diuretics, also can cause hypercalcemia. Patients with severe or symptomatic hypercalcemia should be treated initially with hydration to decrease calcium levels. The evaluation should include a parathyroid hormone (PTH) level...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28804641/breast-cancer-detected-as-an-incidental-finding-on-99m-tc-mibi-scintigraphy
#11
Toshihiro Homma, Osamu Manabe, Kazuomi Ichinokawa, Hiroko Yamashita, Noriko Oyama-Manabe, Fumi Kato, Kenji Hirata, Markus Kroenke, Nagara Tamaki
We report a case of breast cancer detected as an incidental finding on (99m)Tc-MIBI scintigraphy. (99m)Tc-MIBI scintigraphy is usually used to evaluate cardiac perfusion or to detect ectopic parathyroid adenomas; however, it is also known to sensitively detect breast cancer. Accordingly, a few reports have described the incidental detection of breast cancer by (99m)Tc-MIBI scintigraphy performed to detect parathyroid adenoma. Our present case underscores the importance of attending to any incidental findings when searching for parathyroid adenomas using (99m)Tc-MIBI scintigraphy...
July 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28793001/hypovitaminosis-d-in-patients-undergoing-kidney-transplant-the-importance-of-sunlight-exposure
#12
Cristiane F Vilarta, Marianna D Unger, Luciene M Dos Reis, Wagner V Dominguez, Elias David-Neto, Rosa M Moysés, Silvia Titan, Melani R Custodio, Mariel J Hernandez, Vanda Jorgetti
OBJECTIVES: Recent studies have shown a high prevalence of hypovitaminosis D, defined as a serum 25-hydroxyvitamin D level less than 30 ng/ml, in both healthy populations and patients with chronic kidney disease. Patients undergoing kidney transplant are at an increased risk of skin cancer and are advised to avoid sunlight exposure. Therefore, these patients might share two major risk factors for hypovitaminosis D: chronic kidney disease and low sunlight exposure. This paper describes the prevalence and clinical characteristics of hypovitaminosis D among patients undergoing kidney transplant...
July 2017: Clinics
https://www.readbyqxmd.com/read/28782797/in-situ-preservation-of-the-inferior-parathyroid-gland-during-central-neck-dissection-for-papillary-thyroid-carcinoma
#13
J B Wang, K Wu, L H Shi, Y Y Sun, F B Li, L Xie
BACKGROUND: Postoperative hypocalcaemia due to dysfunction of the parathyroid glands is the most common complication after total thyroidectomy plus central neck dissection (CND). There is a lack of surgical techniques described to help preserve the inferior parathyroid gland in situ during CND. The objective of this study was to introduce the 'TBP layer' (layer of thymus-blood vessel-inferior parathyroid gland) concept for preserving the inferior parathyroid gland in situ during CND, and to evaluate its effectiveness...
October 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28768698/the-future-advances-in-therapeutic-approach-and-management-strategies-for-men1
#14
Rachel S van Leeuwaarde, Joanne M de Laat, Carolina R C Pieterman, Koen M A Dreijerink, Menno Vriens, Gerlof D Valk
Multiple endocrine neoplasia type 1 is a rare autosomal inherited disorder associated with a high risk for patients to simultaneously develop tumours of the parathyroid glands, duodeno-pancreatic neuroendocrine tumors and tumors of the anterior pituitary gland. Early identification of MEN1 in patients enables presymptomatic screening of manifestations which makes timely interventions possible with the intention to prevent morbidity and mortality. Causes of death nowadays have shifted towards local or metastatic progression of malignant neuro endocrine tumors...
August 2, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28723610/pediatric-reference-intervals-for-29-ortho-vitros-5600-immunoassays-using-the-caliper-cohort-of-healthy-children-and-adolescents
#15
Victoria Higgins, Angela W S Fung, Man Khun Chan, Joseph Macri, Khosrow Adeli
BACKGROUND: Accurate reference intervals (RIs) based on a healthy pediatric population are essential for pediatric test result interpretation. The CALIPER project has recruited a large healthy cohort and completed a series of a priori studies to address gaps in pediatric RIs. As immunoassays from different manufacturers for endocrine and special chemistry markers are not standardized and show marked intermethod differences, direct RI studies are needed for each major analytical platform...
July 19, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28642759/biodistribution-and-efficacy-of-human-adipose-derived-mesenchymal-stem-cells-following-intranodal-administration-in-experimental-colitis
#16
Mercedes Lopez-Santalla, Pablo Mancheño-Corvo, Amelia Escolano, Ramon Menta, Olga DelaRosa, Jose Luis Abad, Dirk Büscher, Juan M Redondo, Juan A Bueren, Wilfried Dalemans, Eleuterio Lombardo, Marina I Garin
Mesenchymal stem cells (MSCs) have a large potential in cell therapy for treatment of inflammatory and autoimmune diseases, thanks to their immunomodulatory properties. The encouraging results in animal models have initiated the translation of MSC therapy to clinical trials. In cell therapy protocols with MSCs, administered intravenously, several studies have shown that a small proportion of infused MSCs can traffic to the draining lymph nodes (LNs). This is accompanied with an increase of different types of regulatory immune cells in the LNs, suggesting the importance of migration of MSCs to the LNs in order to contribute to immunomodulatory response...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28642344/a-role-for-tet2-in-parathyroid-carcinoma
#17
Elham Barazeghi, Anthony J Gill, Stan Sidhu, Olov Norlén, Roberto Dina, F Fausto Palazzo, Per Hellman, Peter Stålberg, Gunnar Westin
Primary hyperparathyroidism (pHPT) is rarely caused by parathyroid carcinoma (PC, <1-5% of pHPT cases). The TET proteins oxidize the epigenetic mark 5-methylcytosine to 5-hydroxymethylcytosine (5hmC) and inactivation by mutation or epigenetic deregulation of TET1 and TET2 play important roles in various cancers. Recently, we found that 5hmC was severely reduced in all of the analyzed PCs and with deranged expression of TET1 for the majority of PCs. Here, we have examined the expression of the TET2 protein in 15 5hmC-negative PCs from patients who had local invasion or metastases...
July 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28621914/distinguishing-parathyroid-and-thyroid-lesions-on-ultrasound-guided-fine-needle-aspiration-a-correlation-of-clinical-data-ancillary-studies-and-molecular-analysis
#18
Margaret Cho, Thaira Oweity, Tamar C Brandler, Karen Fried, Pascale Levine
BACKGROUND: Differentiating parathyroid and thyroid lesions can be challenging because of considerable morphologic overlap and anatomic proximity. Therefore, the authors sought to identify characteristic morphologic patterns and useful adjunct tests to distinguish these 2 entities. METHODS: A search was conducted in the study institution database for clinically indeterminate thyroid nodules from 2000 through 2016 with an emphasis on confirmed parathyroid nodules...
September 2017: Cancer
https://www.readbyqxmd.com/read/28573053/humoral-hypercalcemia-of-malignancy-with-a-parathyroid-hormone-related-peptide-secreting-intrahepatic-cholangiocarcinoma-accompanied-by-a-gastric-cancer
#19
Katsushi Takeda, Ryosuke Kimura, Nobuhiro Nishigaki, Shinya Sato, Asami Okamoto, Kumiko Watanabe, Sachie Yasui
Humoral hypercalcemia of malignancy (HHM) is caused by the oversecretion of parathyroid hormone-related peptide (PTHrP) from malignant tumors. Although any tumor may cause HHM, that induced by intrahepatic cholangiocarcinoma (ICC) or gastric cancer (GC) is rare. We report here a 74-year-old male who displayed HHM with both ICC and GC and showed an elevated serum PTHrP level. Treatment of the hypercalcemia with saline, furosemide, elcatonin, and zoledronic acid corrected his serum calcium level and improved symptoms...
2017: Case Reports in Endocrinology
https://www.readbyqxmd.com/read/28571792/papillary-carcinoma-of-the-thyroid-in-patients-with-primary-hyperparathyroidism-is-there-a-link
#20
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
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