ESPE Abstracts

Background: 17β-Hydroxysteroid dehyrogenase type 3 (17βHSD-3) deficiency is an autosomal recessive form of 46,XY disorder of sex development (DSD). 17βHSD-3 is present almost exclusively in the testes and converts androstenedione to testosterone. The diagnosis can be easily missed in early childhood as the clinical presentation may be subtle. The most frequent presentation of 17βHSD-3 deficiency is a 46,XY individual with female external genitalia, labial f...

Background: Congenital hypothyroidism (CH) is divided into two main groups as ‘permanent’ and ‘transient’. Diagnosis of transient hypothyroidism is important to avoid lifelong unnecessary therapy with its possible side effects.Objective and hypotheses: We aimed to determine the rate of transient and permanent congenital hypothyroidism of the newborns referred to our clinic from the neonatal screening program in this study.</st...

Background: Various studies, mostly conducted in adults, evaluated the hormonal axis in primary empty sella (PES), and reported different forms of pituitary deficiencies. We report our 10-year experience of pediatric cases with PES, investigating the pituitary function, associated impairments, and responses to treatments.Materials and Methods: We reviewed 10,560 cranial and 325 pituitary magnetic resonance imagings (MRIs) performed in ou...

Background: Obesity is a multifactorial disease caused by environmental and genetic factors. Single gene defects explain approximately 5-13% of early-onset obesity and these rates vary according to genetic panel used and the rate of consanguinity in the population studied. As the new treatment modalities emerge for monogenic obesity, it is important to identify the molecular etiology of obesity.Materials and Methods: Buc...

Introduction: Metaphyseal dysplasia, Spahr type(MDST) is an autosomal recessive primary skeletal dysplasia characterized by postnatal short stature, progressive bowing deformity, waddling gait, with an incidence of <1/1 million. MDST is caused by mutations in Matrix metallopeptidase 13(MMP13) gene. The MMP13 plays a role in the degradation of extracellular matrix proteins. It is required for embryonic bone development and ossification. It may be involved in...

Background: Pituitary resistance to exogenous thyroxine (RETH) refers to persistently elevated serum TSH levels despite high/normal T4 concentrations in levothyroxine-treated patients. The underlying mechanisms and natural history of RETH in children with congenital hypothyroidism (CH) are not well known.Objective: We aimed to describe the possible mechanisms and natural history of RETH in children with CH.<p class="...

Introduction: In cases of congenital and acquired hypothyroidism, there can be a development of resistance to Levothyroxine (LT4) over time. The cause of this clinical picture is unknown and often improves later in life. However, in some cases or receptor expression disorders, it may be necessary to add T3 to the treatment to overcome this condition.Aim: This study aims to determine the characteristics of cases where per...

Introduction: Metreleptin is a leptin replacement therapy used as an adjunct to diet to treat the metabolic complications of leptin deficiency in lipodystrophy, a rare disease characterised by loss of adipose tissue. Previously, identification of T-cell lymphomas in three metreleptin-treated patients with acquired generalised lipodystrophy (AGL) led to concerns of a potential link between metreleptin and lymphoma development.Meth...

Background: Polyuria-polydipsia syndrome (PPS) is a common condition in children, and its etiology is not always easily elucidated. Although the water deprivation test remains the gold standard for diagnosis, its limitations necessitate the search for alternative diagnostic methods. Due to its stability, copeptin is a valuable current parameter that is considered more reliable than AVP measurement. This study aims to compare copeptin levels between patients wi...

Introduction: Data on atypia of undetermined significance (AUS) in thyroid fine needle aspiration biopsy in children is limited. The American Thyroid Association (ATA) pediatric guideline recommends surgery, while the European Thyroid Association (ETA) recommends fine-needle aspiration biopsy (FNAB) repetition after 6 months. The aimof this study is to determine the markers of malignancy in AUS in children and to discuss the approach to AUS.<p class="abste...