ESPE Abstracts

Background: Hereditary hypomagnesemia with secondary hypocalcemia (HSH) is a are autosomal recessive disorder which presents in early infancy with generalized convulsions, or other symptoms related to increased neuromuscular excitability. Several mutations in the TRPM6 gene have been described. Early diagnosis is an effective means of preventing the inevitable neurocognitive sequelae which occur in the absence of appropriate treatment.<s...

Background: Hepatoblastoma is the most common malignant pediatric hepatic tumor virtually confined to infants and young children. Accompanied by raised levels of alpha fetoprotein (AFP)，rarely, the beta human chorionic gonadotropin (β hCG) levels may also be elevated, which can cause male peripheral precocious puberty (PPP).Objective: To report a case of HB presented with PPP with elevated serum AFP, β h...

Introduction: Magnesium is the second most abundant intracellular cation, and its low level causes several side effects related to hypoparathyroidism, hypocalcaemia, and vitamin D deficiency. Furthermore, some of the cases of hypomagnesemia are linked to platinum-based chemotherapy, resulting in neurotoxicity and nephrotoxicity. Dorsal root ganglion is the main target of platinum drugs, whereby its signs and symptoms can be detected months after chemotherapy. ...

Background: Rickets is a disease due to a reduced mineralization of the rapidly growing bones (skull, ribs, wrists, knees, ankles) with consequent accumulation of non-mineralized bone matrix, called osteoid tissue. The most frequent cause of rickets is vitamin D and/or calcium deficiency caused by reduced sun exposure, inadequate dietary intake or malabsorption (nutritional rickets).Clinical history: R., a 1 year and 6 m...

Background: Clinical spectrum of 46 XY DSD is characterized by a greatest diversity. Atypical sex development can occur through different steps of testicular differentiation. Etiologies of 46 XY DSD are termed gonadal dysgenesis, hormonal dysfunction and action. Its global incidence is unknown but the most common presentation, hypospadias, is understood to occur in 1 in 125 male births, and complete androgen insensitivity has an incidence of 1:20,000 people.</...

Normocalcemic primary hyperparathyroidism (NPHPT) has been recognized as a variant of primary hyperparathyroidism (PHPT) and it is characterized by elevated PTH with persistently normal concentrations of albumin-adjusted total and ionized calcium. It is related to increased risk in development of osteopenia/osteoporosis as well of parathyroid adenoma and hypercalcemia/hypercalciuria. In order to identify biochemical disorders of PTH in normocalcemic children we performed in al...

Background: Debate still exists about the safety of long-term use of prednisone (PD) versus hydrocortisone (HC) for treating children with CAH. Relatively slight supraphysiologic levels may be enough to blunt growth velocity, increase weight gain.Objectives of the study: We evaluated the anthropometric and biochemical effects of long-term PD versus HC treatment in children with CAH-21OHD.<p class="ab...

Background: Both CYP24A1 and SLC34A1 gene mutations are responsible for idiopathic infantile hypercalcemia (IIH). Whereas loss-of-function mutations in CYP24A1 (25-OH-vitamin D-24-hydroxylase) lead to a defect in the inactivation of active 1,25(OH)2-vitamin D3, mutations in SLC34A1 encoding renal sodium-phosphate co-transporter NaPi-IIa lead to primary renal phosphate wasting combined with an inappropri...

Introduction: X-linked hypophosphatemic rickets (XHR) is the most common form of hereditary rickets, with an estimated incidence of 1: 20.000 individuals. The main characteristic of the disease is excessive renal phosphate loss, which leads to hypophosphatemia with high phosphaturia and defective bone mineralization.XHR results from mutations in the in the PHEX gene (Phosphate Regulatory Gene with Homology for Endopeptidases located on t...

Background: Neonatal hypocalcemia is a common disorder, occurring more often in premature, low birth weight and asphyxiated infants, as in infants born to mothers with diabetes. Nevertheless its aetiology is heterogeneous ranging from iatrogenic, idiopathic and inherited metabolic abnormalities. Among these, Autosomal Dominant Hypocalcemia (ADH) is a rare syndrome characterized by the presence of inappropriately low concentration of circulating parathyroid hor...