ESPE Abstracts

Background: Hereditary hypophosphatemic rickets with hypercalciuria (HHRH) is a rare autosomal recessive disorder characterized by rickets, muscle weakness, bone pain, nephrocalcinosis or nephrolithiasis. It is caused by mutation in SLC34A3 gene, encoding for renal sodium-phosphate cotransporter IIc (NaPi-IIc).Case: A patient aged 10 years came for evaluation for bone pain at lower limbs. He was born at full term from no...

Introduction: Mandibular hypoplasia, Deafness, Progeroid features, Lipodystrophy (MDPL) syndrome is a rare autosomal dominant disorder caused by mutation in POLD1 gene, which encodes the catalytic subunit of the DNA polymerase delta (Polδ) enzyme.Case: a 6.5-year-old boy presented to the outpatient clinic due to severe thinness (BMI -4.86 SDS, WHO 2006 growth charts). Examination of his medical history rev...

Background: Congenital Adrenal Hyperplasia (CAH) is a rare autosomal recessive genetic disorder caused by the absence or severely impaired activity of enzymes involved in adrenal steroid biosynthesis, with over 90% of cases resulting from 21-hydroxylase deficiency. The initial presentation of CAH can range from a dramatic adrenal crisis with salt loss to more subtle signs such as female genital ambiguity or male scrotal hyperpigmentation. Timely identification...

Background: Pseudohypoparathyroidism (PHP) refers to a group of rare diseases characterized by post-receptor resistance to parathyroid hormone and other protein hormones (TSH, GHRH, LH, FSH), due to defects in the Gsα protein. PHP can be associated with the phenotype known as Albright’s hereditary osteodystrophy (AHO), which includes round face, short stature, brachydactyly, ectopic ossifications and mental retardation. Diagnosis often stem out fro...

Background: Pituitary hyperplasia secondary to primary hypothyroidism (PHPH) is a rare cause of sellar mass in paediatric patients. Longstanding and untreated primary hypothyroidism leads to hyperplasia of thyrotrophs and lactotrophs as well as transdifferentiation of somatotrophs to thyrotrophs. Hashimoto's thyroiditis is the most common cause of hypothyroidism in PHPH. Clinical findings of PHPH include growth retardation, obesity and symptoms of hypothy...

Inherited disorders of biogenic amine metabolism are rare neurometabolic disorders caused by defects in neurotransmitters (dopamine, serotonin, norepinephrine, epinephrine). Dopamine deficiency leads to hyperprolactinemia. Prolactin blood level is used as peripheral indirect biomarker of central dopamine deficiency and can help in adjusting the therapy dosage, which primarily consists of using L-dopa. However, patients may become refractory to L-dopa and they could present hyp...

Background: Achondroplasia is the most common form of skeletal dysplasia, caused by activating mutations of FGFR3 gene. In the previous years the management of achondroplasia was focused on prevention and treatment of complications related to the altered cartilage maturation. Therapeutic spectrum of achondroplasia was broadened by approval of Vosoritide (VOXOZOGO®), a synthetic recombinant analogue of C-natriuretic peptide (CNP). The interaction between ac...

Introduction: Neonatal hyponatremia with hyperkalemia is an uncommon but potentially life-threatening occurrence. Congenital adrenal hyperplasia is often suspected in these cases, but among the alternative diagnoses, it is important to consider pseudohypoaldosteronism, a rare syndrome characterized by increased aldosterone secretion associated with clinical signs of hypoaldosteronism.Case presentation: A 21-day-old femal...