Endocrine Abstracts

Objective: Primary hyperparathyroidism (PHPT) is associated with a higher incidence of different cardiovascular diseases (CVD), but the prevalence of CVD in PHPT remains unclear.Aim: To evaluate the prevalence of CVD in PHPT according to the RussianPHPT Registry.Materials and Methods: The Registry includes a database of patients with PHPT available at the Endocrinology Research Centre (Moscow) since 2007, which was transferred to t...

Backgrounds: Preoperative diagnosis of parathyroid carcinoma (PC) is critical for the determination of the scope of surgical intervention. Nowadays, specific diagnostic markers for differentiation of PC and benign tumors are unknown, and less than half of patients with PC undergo necessary en bloc surgery.Aims: To develop the instrument for preoperative diagnosis of PC.Materials and methods: A multi-center retrospective study inclu...

Background: MEN1-related primary hyperparathyroidism (PHPT) characterised by benign course, whereas malignant transformation is extremely rare. The diagnosis of parathyroid carcinoma (PC) within the MEN-1 syndrome is a challenge for a range of specialists.Clinical case: A 47-year Eastern European female. PHPT had been revealed during examination for multinodular goitre: PTH 614 nmol\l, calcium 3.06 mmol\l. Results of imaging methods were controversial (m...

Introduction: ADH-deficiency (central diabetes insipidus, ADH-D) is a rare disease, and data on worldwide and country-specific prevalence rates are scarce. ADH-D registries could provide valuable information on epidemiology, etiological distribution, treatment requirements and potentially serve as a guide for management decisions in clinical practice.Objectives: To assess the epidemiological data on ADH-D in Russian Registry for Central Diabetes Insipidu...

Introduction: The treatment of choice for parathyroid carcinoma (PC) is a radical en bloc resection. Treatment options for patients with metastatic PC are limited especially if a complete tumor removal cannot be performed. We present four cases of PC patients with multiple metastasis and refractory hypercalcemia that eventually received a multikinase inhibitor with different response on therapy.Clinical cases: The first patient was a 27-year-old woman wi...

Introduction: Despite recent developments in biochemical, radiological and molecular techniques, a preoperative diagnosis of parathyroid carcinoma (PC) remains a difficult task. The main challenge of all studies in this area is a small number of cases based on retrospective data. The search for new blood biomarkers associated with PC could be important for early diagnosis and prognosis. Dysregulated microRNA (miRNA) levels are involved in tumorigenesis and may serve as diagnos...

Background: Hypercalcemia may stimulate thyroid’s C-cells to produce the calcitonin, that could lead to misdiagnosis of medullary thyroid cancer.Clinical case: A 47-year-old woman suffered from fracture of the left knee. She could not walk and used a wheelchair. CT scan in a public hospital detected multiple bone lytic changes in the ribs and vertebrae (mts?), tumor in the liver (mts?) and node in the thyroid gland 2.6*1.9 cm. Thyroid biopsy showed ...

Introduction: Multiple endocrine neoplasia type 4 (MEN4) is a rare disorder, caused by inactivating mutations in CDKN1B gene that encodes p27kip1 cyclin-dependent kinase inhibitor. To date nine different germline CDKN1B mutations have been described in patients with clinical features of multiple endocrine neoplasia type 1 (MEN1) negative for MEN1 mutations (MEN1 phenocopies).Case report: We present a female 54 y.o. w...

Introduction: Parathyroid carcinoma (PC) occurs in 0.005% of all malignant tumors and in less than 1% in primary hyperparathyroidism (PHPT), but recent reports indicate increasing incidence of PC.Aim: To estimate the prevalence of PC in Russia and to identify its distinctive characteristics relevant as preoperative markers.Material and methods: We conducted a retrospective study based on the online Russian Registry of 3061 patients...

Background: Hypertension is one of the widespread cardiovascular pathology in patients with primary hyperparathyroidism (PHPT).The renin-angiotensin-aldosterone system (RAAS) is a key system in the regulation of blood pressure and its interactions with mineral metabolism are described. Our previous study* of PHPT patients revealed a significant decrease in plasma renin activity (PRA) and serum aldosterone levels in the early postoperative period and also positive correlations ...