Endocrine Abstracts

Parathyroid carcinoma is an uncommon cause of PTH-dependent hypercalcemia. The clinical features of parathyroid carcinoma are due primarily to the effects of excessive secretion of PTH. Thus, signs and symptoms of hypercalcemia often dominate the clinical picture. The therapeutic goal at this point is to control the hypercalcemia. We describe two cases of parathyroid carcinoma, effectively treated with calcimimetic Cinacalcet (Mimpara®), the first of a new class of compou...

Primary hyperparathyroidism (PHPT) is often associated with reduced bone mineral density (BMD). An open-labeled, prospective trial was conducted to determine whether denosumab 60 mg subcutaneously given every 6 months, maintains or improves BMD in patients with PHPT.Six patients had symptomatic PHPT and met surgical guidelines however refused surgery, and twelve patients had mild PHPT, asymptomatic except low BMD. The primary outcome index, BMD, was meas...

Background: Neuroendocrine tumors awareness is developing. Carcinoid syndrome and hormonal overproduction may be controlled with somatostatin analogues in majority of cases. However, due to unspecific symptomatology in early stages of disease, majority of cases are diagnosed when process is disseminated. Co-morbidities and coexisting diseases are present in most of patients. Bone loss may be accelerated by metastizing tumor, peptides secreted or decreased absorption of vitamin...

Background: The curative therapy of primary hyperparathyroidism (pHPT) is surgery. Data about ultrasound-guided laser ablation (LA) of parathyroid tumor are limited, however it could be a solution for patients with high surgery or anesthetic risk. We report our experience on LA of parathyroid tumors in 11 patients with pHPT with high surgery or anesthetic risk.Methods: LA was performed under ultrasound guidance with an output power of 3W. Total energy an...

In 100 consecutive osteoporotic women referred to our clinic we assessed 25OHD3 and PTH levels. Patients suffered from postmenopausal osteoporosis and intolerance of oral bisphosphonates, were treated at least for 6 months with calcium and vitamin D. The reasons of intolerance of oral medication were gastritis (53), esophagitis (18) or peptic ulcer (29 cases). Patients were therefore chronically treated with proton pump inhibitors (PPI). They were referred to our Clinic in ord...

Introduction: Ultrasound imagining of parathyroid lesions is often challenging, as they may be difficult to distinguish from thyroid lesions or enlarged lymph nodes.Aim: The aim of the study was to assess the value of parathyroid hormone determination in ultrasound-guided fine-needle aspirates-(FNA) in preoperative localization of parathyroid lesions.Materials and methods: We measured FNA–PTH in 30 consecutive patients with pr...

The aim of the study was to evaluate factors determining bone mineral density (BMD) and serum concentrations of osteocalcin (OC) and carboxyterminal telopeptide of type I collagen (ICTP) in acromegaly. Material consisted of 121 patients with active acromegaly, aged 23–80 years. In the whole group BMD, assessed by DXA, was: 0.35±0.15 at L2–L4, 0.60±0.11 at femoral neck, 0.05±0.12 at Ward’s triangle and 0.59±0.13 at trocha...

Introduction: 24-hydroxylase, encoded by a CYP24A1 gene, is a crucial enzyme entailed in catabolism of vitamin D. Loss-of-function mutations of CYP24A1 result in hypercalcemia, not adequately concomitant high levels of 1,25(OH)2D and low PTH levels. The variety of clinical manifestations depends on age – mutations can lead to fatal infantile hypercalcemia among neonates (typically precipitated by supplementation of vitamin D), whereas adults’ symptoms are usually mil...

Background: Vitamin D is a dietary micronutrient responsible for calcium and phosphorus metabolism and multiple extraskeletal actions. The assessment of vitamin D status is commonly based on measurement of 25(OH)D total concentration in serum. However, the usage of LC-MS/MS analytical technique allows to reliably assess a panel of vitamin D metabolites in serum or plasma, which may help to investigate the metabolic paths of vitamin D, especially in populations at risk of defic...