ESPE Abstracts

Background: X-linked hypophosphatemic rickets (XLH) represents the most common form of hypophosphatemia and leads to vitamin D resistant rickets in children. Even though cranial vault and craniovertebral anomalies of potential neurosurgical interest, namely early closure of the cranial sutures and Chiari type I malformation- have been observed in XLH patients their actual incidence is not established.Aim: Describe and analyze the incidence of cranial and...

Introduction: Graves’s disease is frequent in women, its prevalence being 0.5–2% and its incidence 0.1–1% during pregnancy. Both TSH anti-receptor antibodies and the synthetic antithyroid drugs cross the placenta, increasing the risk of hypo- and/or hyperhtyroidism. Our objective is to describe the thyroid status of fetus and newborns from women with Graves’s disease referred to our Department.Materials and methods: We included childr...

Background: Rett (RTT) syndrome is a neurodevelopmental disorder related to mutations in the MECP2 gene that affects girls almost exclusively. In Rett syndrome patients have a high incidence of fractures that can occur at a young age.Objective and hypotheses: One of the objectives of this study was to identify clinical, radiographic and biological parameters associated to fracture incidence.Method: 89 RTT patients bearing a MEC...

Background: Rett Syndrome (RS) is a disabling condition due to mutations in MECP2. Girls affected with RS are at risk of developing osteoporosis and fractures at a young age because of their lack of mobility and though a direct effect of MECP2 on bone mineralization. In these girls, bone fragility inflicts pain and may seriously impair the quality of life.Objective: To retrospectively assess the effect of pamidronate on fractures, bone mineral density (B...

Background: Hot thyroid nodules are uncommon in children and adolescents. Hyperfunctioning adenoma do not always produce hyperthyroidism, but can precede the apparition of a truly toxic adenoma. Autonomous adenoma can be associated with mutations of TSH-R and some mutations of GNAS.Patients: Patient 1 presented mild clinical hyperthyroidism. Patients 2 and 3 were asymptomatic and had clinical euthyroidism. Examination revealed a unique isolated thyroid n...

Background: Profound hypothyroidism due to Hashimoto thyroiditis (HT) is a cause of severe growth arrest in children. Although it is commonly thought that thyroxine replacement fully restores height deficit, no data on catch up growth are available.Objective and hypotheses: Assess the growth pattern and final height in a series of 10 patients with severe HT afec L-thyroxine therapy was initiated.Method: Monocentric retrospective ob...

Background: Pseudohypoparathyroidism (PHP) is characterized by proximal tubular resistance to PTH and, in some disease variants, by Albright osteodystrophy. PHP is caused either by mutations in those regions of GNAS encoding Gsα (PHP1A and PseudoPHP) or by GNAS methylation defects (autosomal dominant (AD) and sporadic (spor) PHP1B). Phenotypic differences in fetal growth, post-natal growth and metabolism are observed in the different PHP types.<p cla...

Background: Hypothamamic hamartomas (HH) are rare benign tumours of the tuber cinereum revealed by central precocious puberty (CPP) and, in some cases, gelastic seizures and cognitive impairment.Objective and hypotheses: Evaluation of the treament by GnRH analogues on control of puberty and final height in patients with HH.Method: We report a series of five cases of CPP secondary to HH (four girls and one boy). Early in infancy (9 ...

Background: X-linked Hypophosphatemia (XLH), the most common heritable form of rickets, is a disorder of renal phosphate wasting caused by high circulating levels of fibroblast growth factor 23 (FGF23) that impairs normal phosphate reabsorption in the kidney and production of the active form of vitamin D. Affected children present with hypophosphatemia resulting in rickets, bowing of the legs and short stature. Limited information is available about the disease burden in child...

Since the first description of pseudohypoparathyroidism (PHP), a remarkable clinical variability, which translates in several PHP subtypes, was observed. In 2016 a new classification of this group of diseases have been published by the European Network on PHP and related disorders, proposing “inactivating PTH/PTHrP signaling disorder” (iPPSD) as a new term that encompasses all the clinical entities, stressing the common mechanism responsible for all diseases. iPPSDs ...