Diagnosis and management of tumor-induced osteomalacia: a single center experience.

Purpose: The aim of this study is to review the clinical and laboratory characteristics, diagnostic and treatment modalities of tumor-induced osteomalacia (TIO) cases managed in a single center.

Material Methods: Demographic and clinical features, biochemical findings, diagnostic procedures, treatment modalities, and outcomes of nine patients who had the diagnosis of TIO were reviewed retrospectively.

Results: Mean age of the study group (F/M: 4/5) was 45.

Transglutaminase 2 expression is associated with increased risk of lymph node metastasis and recurrence in papillary thyroid cancer.

Purpose: Transglutaminase 2 (TG2) is associated with mobilization, invasion, and chemoresistance of tumor cells. We aimed to determine whether the immunohistochemical staining with TG2 antibody differs between metastatic and non-metastatic papillary thyroid cancer patients.

Methods: We included 76 patients with papillary thyroid cancer (72% female, median age 52 (24-81) years, follow-up time 107 (60-216) months).

Subacute THYROiditis Related to SARS-CoV-2 VAccine and Covid-19 (THYROVAC Study): A Multicenter Nationwide Study.

Context: The aims of the study are to compare characteristics of subacute thyroiditis (SAT) related to different etiologies, and to identify predictors of recurrence of SAT and incident hypothyroidism.

Methods: This nationwide, multicenter, retrospective cohort study included 53 endocrinology centers in Turkey. The study participants were divided into either COVID-19-related SAT (Cov-SAT), SARS-CoV-2 vaccine-related SAT (Vac-SAT), or control SAT (Cont-SAT) groups.

Effect of Cabergoline Treatment on Disease Control in Acromegaly Patients.

The aim of this study was to evaluate the efficacy of cabergoline in normalizing plasma IGF-I levels in acromegaly patients with elevated IGF-I levels after surgery and/or SRL therapy. Acromegaly patients (n: 143) were evaluated retrospectively. Patients with elevated IGF-I levels after surgery and/or SRLs therapy and a fixed dose of SRLs treatment for the last six months with no history of radiotherapy in the last three years were included in the study (n: 12).

A rare cause of dilated cardiomyopathy: hypocalcemia.

Dilated cardiomyopathy (DCM) is characterized by systolic dysfunction and is usually idiopathic. A rare cause of reversible DCM is hypocalcemia. Calcium plays a key role in myocardial contraction.

Hypertension with primary aldosteronism is associated with increased carotid intima-media thickness and endothelial dysfunction.

Patients with primary aldosteronism induced hypertension are more likely to experience cardiovascular events compared to patients with essential hypertension. Primary aldosteronism may therefore have distinct adverse effects on cardiovascular structure and function, independent of hypertension. However, current data on such effects of primary aldosteronism are conflicting.

Calcitriol treatment in patients with low vitamin D levels.

Unlabelled: The aim of the the study is to compare the effects of cholecalciferol and calcitriol on bone mineral metabolism in women with vitamin D deficiency. Calcitriol was associated with a significant increase in bone mineral density at the lumbar spine in patients with low vitamin D levels.

Purpose/introduction: Active vitamin D analogs may have larger impact in decreasing bone loss and fracture rate compared to cholecalciferol in osteoporosis.

Prevalence of papillary thyroid cancer in subacute thyroiditis patients may be higher than it is presumed: retrospective analysis of 137 patients.

Background The association of subacute thyroiditis (SAT) and papillary thyroid carcinoma is a rare finding. In this study, we aimed to investigate the prevalence of differentiated thyroid cancer in a cohort of patients followed with the diagnosis of SAT. Patients and methods We retrospectively screened medical records of Endocrinology and Metabolism outpatient clinic in the past 20 years for patients with SAT.

Osteoporosis and osteopathy markers in patients with mastocytosis.

Objective: Osteoporosis, osteosclerosis, and lytic bone lesions have been observed in patients with systemic mastocytosis (SM). We examined bone mineral density (BMD) biochemical turnover markers and serum tryptase levels in SM, which is considered a rare disease.

Materials And Methods: Seventeen adult patients (5 females, 12 males; median age: 33 years, range: 20-64) with mastocytosis were included in this study.

The pituitary gland in patients with Langerhans cell histiocytosis: a clinical and radiological evaluation.

Langerhans cell histiocytosis (LCH) is a rare disease in which the most common endocrine manifestation is diabetes insipidus (DI). Data on anterior pituitary function in patients with LCH are limited. Thus, the present study investigated anterior pituitary function in LCH patients with DI via the evaluation of clinical and radiological findings at disease onset and during follow-up.

Spectral effect: each population must have its own normal midnight salivary cortisol reference values determined.

Introduction: The mesurement of midnight salivary cortisol provides the most sensitive method for screening of Cushing's sendrome. However the clinical significance of spectral error is the requirement for determination of normal reference values in each population for each test, which will be used as the diagnostic method. Salivary cortisol levels may be affected by individual factors such as nutrition, sleep, medication, activity, and gender.

Successful desensitization to imiglucerase of an adult patient diagnosed with type I Gaucher disease.

Gaucher disease is the most common lysosomal storage disorder, and enzyme replacement therapy, such as administration of imiglucerase, is the standard therapy. Anaphylaxis to imiglucerase is rarely reported. Here, we report a 26-year-old female who was diagnosed with type 1 Gaucher disease and referred to our Allergy Outpatient Clinic because of an anaphylactic reaction due to imiglucerase enzyme therapy.

Effects of vitamin D replacement therapy on serum FGF23 concentrations in vitamin D-deficient women in short term.

Objective: Fibroblast growth factor 23 (FGF23), a phosphatonin, inhibits renal phosphate reabsorption and suppresses 1-α hydroxylase activity. Calcitriol stimulates FGF23 synthesis in bone. We aimed to determine the effect of vitamin D replacement therapy on serum FGF23 concentrations in vitamin D-deficient women and to compare the FGF23 concentrations of vitamin D-deficient patients with healthy subjects and patients with genetically determined hypophosphatemic rachitis.

Parathyroid changes after high dose radioactive iodine in patients with thyroid cancer.

Objective: The study aimed to investigate the effect of high dose radioactive iodine (RAI) on parathyroid function in patients with differentiated thyroid cancer.

Methods: Nineteen patients (8 men/11 women, age 46.5 +/- 13.

Two novel GALNT3 mutations in familial tumoral calcinosis.

Familial tumoral calcinosis (TC) is characterized by elevated serum phosphate concentrations, normal or elevated 1,25(OH)2 vitamin D, as well as periarticular and vascular calcifications. Recessive mutations in the mucin-like glycosyltransferase GalNAc transferase-3 (GALNT3) and the phosphaturic hormone fibroblast growth factor-23 (FGF23) have been shown to result in TC. In the present study, mutational analyses were performed on two patients with TC to determine the molecular basis of their diseases.

Clodronic acid in the treatment of postmenopausal osteoporosis.

Background: Clodronic acid, a first-generation bisphosphonate, has been successfully used in the treatment of high bone turnover states, Paget's disease and osteolytic bone metastases. However, controversies remain over its optimal dosage and method of administration in the treatment of postmenopausal osteoporosis. In this study we aimed to evaluate the effect of clodronic acid treatment for 3 years on bone mineral density (BMD) in women with postmenopausal osteoporosis.

Lymphocytic panhypophysitis in a young man with involvement of the cavernous sinus and clivus.

Lymphocytic hypophysitis is an unusual inflammatory lesion that is caused by autoimmune destruction of the pituitary gland. We report a case of 42-year-old man who presented with a 6-month history of severe headache, blurred vision in the right eye, hearing loss, polyuria, polydipsia, and impotence. Medical history showed that he and his mother had osteopetrosis.

A case of McCune-Albright syndrome associated with Gs alpha mutation in the bone tissue.

The syndrome of McCune-Albright syndrome (MAS) is clasically defined as a triad presentation with the findings of polyostotic fibrous dysplasia, café-au-lait spots, and sexual precocity. However, not all patients present with complete symptoms. A 52-year-old man was diagnosed as having a variant of McCune-Albright syndrome with the following findings: polyostotic fibrous dysplasia, acromegaly due to pituitary tumor and subclinical hyperthyroidism due to toxic multinodular goiter.

Polymorphisms at the ligand binding site of the vitamin D receptor gene and osteomalacia.

Vitamin D receptor (VDR) gene polymorphisms have been suggested as possible determinants of bone mineral density (BMD) and calcium metabolism. In this study, our aim was to determine whether there is an association between VDR gene polymorphism and osteomalacia or not. We determined ApaI and TaqI polymorphisms in the vitamin D receptor gene in 24 patients with osteomalacia and 25 age-matched healthy controls.

Vitamin D receptor alleles, bone mineral density and turnover in postmenopausal osteoporotic and healthy women.

Objective: Vitamin D receptor (VDR) gene polymorphisms and bone metabolic markers were investigated as potential genetic markers for osteoporosis in postmenopausal Turkish women. The relationship between their VDR gene polymorphisms and bone states was determined.

Materials And Methods: Restriction fragment length polymorphisms at the VDR gene locus (i.

Lack of association between vitamin D receptor gene polymorphism (BsmI) and osteomalacia.

Vitamin D receptor (VDR) gene polymorphism has been reported to be a determinant of bone formation and intestinal calcium absorption. We carried out this study to assess the role of VDR gene polymorphism in the pathogenesis of osteomalacia. We investigated BsmI polymorphisms in the gene encoding the 1,25 dihydroxyvitamin D receptor in 38 patients with osteomalacia and 31 healthy controls, along with examination of serum calcium, phosphorus, alkaline phosphatase, parathyroid hormone, and 25 hydroxyvitamin D levels.