ESPE Abstracts

Introduction: Leydig cell hypoplasia (LCH) or agenesis, is an autosomal recessive condition and a well-defined form of 46,XY disorder of sex development (DSD) resulting from inadequate foetal testicular Leydig cell differentiation.Inactivating mutations in the luteinizing hormone/chorionic gonadotropin receptor (LHCGR) gene account for the underlying LCH pathogenicityCase report: We studied a 15-ye...

Background: Klinefelter syndrome (KFS) is a sex chromosomal disorder characterised by hypogonadism, progressive testicular failure, gynaecomastia and learning difficulties. Genital anomalies are rarely observed in KFS. Androgen insensitivity has been previously postulated, but not proven to cause genital ambiguity in KFS. Androgen receptor (AR) gene defects are reported in AIS, but have not been reported in children with KFS with mild hypospadias. We describe a novel ...

Background: An increase in the incidence of congenital hypothyroidism (CH) with a normally located gland has been reported worldwide. Affected individuals display transient or permanent CH during follow-up in childhood. We aimed to determine the prevalence of transient CH and to assess the possibility of distinguishing between transient and permanent CH in early infancy.Methods: This observational cohort study included all patients identified by systemat...

Background: The mechanisms responsible for inappropriate insulin release from β-cells in congenital hyperinsulinism in infancy (CHI) have largely focused upon defects in KATP channels. Little is known about insulin biogenesis, the profiles of insulin in insulin-containing secretory granules or whether the impact of KATP channel defects is the same in diffuse- and focal disease.Objective and hypotheses: To define the ultrastruct...

Background: Congenital hyperinsulinism of infancy (CHI) mainly arises from loss-of-function mutations in the KATP channel genes. As a consequence, insulin release is uncontrolled and causes persistent or recurrent episodes of hypoglycaemia in neonates. In patients with diffuse-CHI (CHI-D) increased rates of cell proliferation has been reported, but the causes of proliferation are unknown.Objective/Hypotheses: To assess the extent of cell proliferation an...

Background: The diagnosis of GH deficiency (GHD) in children and adolescents is classically established when GH concentrations fail to reach an arbitrary cut-off level (usually 7–10 μg/l) after at least two provocative tests (PT).Objective and hypotheses: Aim of the study was to define optimal GH cut-offs to different PT in children and adolescent with short stature.Method: This was a retrospective study in 437 subjects w...

Background: Congenital adrenal hyperplasia (CAH), resulting from mutations in CYP11B1 (gene encoding 11β-hydroxylase), is a rare autosomal recessive disorder due to an impairment of the last steroidogenesis step. Consequences are a decreased cortisol secretion, elevated plasma levels of ACTH, and accumulation of steroid precursors responsible of hyperandrogenism and hypertension. It is the second most frequent cause of CAH after 21-Hydroxylase de...

In the history of biosynthetic GH, first prediction models on long term outcome of therapy were based on large multinational cohorts of various growth disorders and have concentrated on GH dose. In this study we analyzed the 1st year and final height (FH) data in a large single center cohort (center of expertise for rare growth disorders) and compared patient outcome and predictions in GHD and SGA. Our aim was to predict treatment outcome using simple previously suggested para...

Background: Advances in the treatment of childhood and adolescence cancer treatment have led to significant increase in survival rate. Current 5-survival rate of childhood cancer is nearly 80%. Hematopoietic stem cell transplant (HSCT) is treatment of choice in many clinical conditions including malignant and non-malignant hematological diseases, solid tumors and immunodeficiency diseases. Children receiving HSCT are prepared with different pre-transplant cond...

Key words: hot nodule, pediatrics, papillary thyroid carcinoma A nodule over 1 centimeter observed in pediatrics need further evaluation. Not having ultrasound changes during monitoring does not mean being benign. Moreover, normal FNA does not rule out a malignancy and it is necessary to repeat the test every 3-6 months. The case was a 15-year-old girl with a 23 mm fixed nodule on ultrasound and normal FNA. She developed hyperthyroidism after two years; a hot ...