ESPE Abstracts

Background: Existing tests are not 100% accurate in differentiating between isolated hypogonadotropic hypogonadism (HH) and constitutional delay of puberty (CDP) in boys. Inhibin B is a glycoprotein produced by the Sertoli cells and is measurable even before puberty. Its level increases at the beginning of puberty under the influence of FSH.Objective and hypotheses: The levels of inhibin B (InhB) could differentiate between HH and CDP. We aimed to establ...

Background: The age of onset of puberty is known to be influenced by poorly understood genetic and environmental factors. Familial forms of precocious puberty suggest the involvement of autosomal genetic factors.Objective and hypotheses: We evaluated the mode of inheritance of precocious puberty in a large series of familial cases of both central precocious puberty (CPP) and advanced puberty.Method: A retrospective, single-centre s...

Background: McCune–Albright syndrome is a rare disorder defined as the triad of peripheral precocious puberty, café-au-lait skin pigmentation and fibrous dysplasia of bone, caused by mutation of the gene GNAS1, resulting in autonomous endocrine hormone excess.Objective and hypotheses: This is the first pediatric case of hirsutism due to tamoxifen, a selective estrogen receptor modulator.Case report: A 53/12 yea...

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: The genetic background of idiopathic central precocious puberty (ICPP) is not well understood. The genetic activation of pubertal onset is thought to arise from the effect of multiple genes. Familial ICPP have been reported suggesting the existence of monogenic causes of ICPP. The neurokinin B (NKB) system has recently been implicated in the regulation of the human reproductive axis, but how NKB system exerts its effects on the central neuroendocrine control of hum...

Background: Isolated premature thelarche (IPT) is characterised by precocious breast development without any other signs of puberty.Objective and hypotheses: The aim of the study was to analyze hormonal activity of the pituitary – ovarian axis in girls with IPT.Method: 102 girls with IPT (Tanner stage 2–3), mean age 2±1.4 years (0.04–7 years), mean weight 12.3±4.3 kg, mean height 85.0±13.6 cm (45±...

Background: Because of episodic secretion of gonadotropins (LH, and FSH), basal levels of these hormones can not objectively be assessed to differentiate delayed puberty in males.Objective and hypotheses: To assess the efficacy of the GnRH agonist (as spray) in diagnosing of delayed puberty in males.Method: Prepubertal males (n=18; age range 13.3–18.5 years) were studied; buserelin 0.15 (spray) μg was administere...

Background: GnRH analogs (GnRHa) have been used in treatment of idiopathic central precocious puberty (ICPP) for several decades. Their effectiveness on adult height (AH) improvement has been widely studied and is still debated.Objective and hypotheses: To assess whether BMI changes in ICPP girls during GnRHa treatment can influence AH.Method: A retrospective study of 131 ICPP girls (mean age at diagnosis: 7.6±0.7, range 4.3&#...

Background: At 14 years of age for boys and 13 years for girls, delayed puberty with low gonadotropic hormones can either be a chronopathologic feature (constitutional delay of puberty – CDP) or the subclinical unmasking of a future isolated hypogonadotropic hypogonadism (IHH). The two conditions are difficult to differentiate at these specific ages.Objective and hypotheses: We aimed to identify clinical and paraclinical features which correlate wit...

Introduction: Pilocytic astrocytoma is the most common type of CNS astrocytoma in children. Clinical manifestations depend on its location and size and initial symptoms are usually related to neurological deficits or signs and symptoms of intracranial hypertension. Involvement of the hypothalamic area, pituitary infundibulum and leptomeningeal spread are exceptional. The case of a patient with central precocious puberty in whom the initial neuroimaging study oriented the diagn...

Introduction: Phosphoglucomutase 1 catalyzes the interconversion of glucose-6-phosphate and glucose-1-phosphate. Phosphoglucomutase 1 deficiency (PGM1-CDG), previously termed glycogenosis type XIV (OMIM 612934), is a rare variant of the congenital disorders of glycolysation (CDG), resulting in abnormal attachment and processing of protein linked N-glycans. We present a girl with PGM1-CDG and delayed pubertal development and review the endocrine findings of the few pat...