ESPE Abstracts

Background: Long-term outcome studies on bilateral testicular regression (BTR) are currently lacking, hampering counseling of patients and parents. Although a vascular origin was initially reported, recent studies revealed a genetic origin in a subset of patients (i.e. DHX37 gene variants). How this relates to patient outcomes remains unclear.Methods: Thirty-five patients with BTR were recruited in eight Belgian centers ...

Background/Aims: 46,XY gonadal dysgenesis (GD) is classified as complete (CGD) or partial (PGD) depending on gonadal morphology and function. In contrast to the typical female external genitalia in CGD, the phenotype of PGD is variable depending on androgen production. A diagnosis of PGD is based on clinical/biochemical features, gonadal histology and genetic findings. The aim of this study is to characterise these features, particularly histological, in a lar...

Context: For transgender women undergoing gender-affirming hormone therapy (HT), breast development is an important treatment outcome. Since earlier studies showed small breast volumes in trans women treated with HT, we hypothesized that testosterone exposure during puberty might negatively influence breast development and that early initiation of puberty suppression (PS) might have a positive effect on breast development.Aim:</s...

Background: Genetic defects in NKX2.1 (chromosome 14q13) are associated with hypothyroidism, choreo-athetotic movements and respiratory distress, known as the “Brain-Lung-Thyroid syndrome”.Objective and hypotheses: To identify the genetic basis of a disorder compatible with the “NKX2.1 syndrome” and extra features outside the typical triad.Patients and methods: 10-year old girl with congenital ...

Introduction: The association of juvenile hypothyroidism, precocious puberty and ovarian enlargement is known as Van Wyk and Grumbach syndrome (VWGS). This diagnosis is considered on the basis of imaging findings and thyroid function analysis.Case report: Herein we report a case of 9 years old girl was referred to the endocrinology department with a suspicion of precocious puberty after having progressive breast enlargem...

Background: Thyroid hormone resistance (THR) is a rare genetic disorder that may be caused by thyroid hormone (TH) cell transporter defects or metabolism defects, but most cases are caused by an inherited mutation in the TH receptor beta (THRB) gene. The reduced responsiveness of target tissues to TH is characterized by elevated TH and a normal or elevated thyroid-stimulating hormone (TSH) level. Differentiating between THR and TSH-producing pituitary...

Introduction: Van-Wyk Grumbach syndrome (VWGS) described in 1960 associate Primary hypothyroidism to early puberty, polycystic ovaries and pituitary adenoma with or without hyperprolactinemia. It is a very rare cause of precocious puberty, which the etiopathogenis is not yet very clear.Observation: We report the case of an 8 year old girl known for trisomy 21, she presented a Primary hypothyroidism treated initially with...

Background: Association of hypothyroidism, isosexual precocious puberty and macrogonadism was first described by Van Wyk Grumbach in 1960. Van Wyk Grumbach syndrome (VWGS) was reported predominantly in females, precocious puberty and clinical picture of hypothyroidism being the clinical hallmarks.Objective and hypotheses: Publishing additional data on clinical and hormonal spectrum of VWGS, providing for better understanding of its pathology and primary ...

Introduction: Ellis Van Creveld syndrome (EVC) is a rare condition which is characterized with disproportionate short stature, postaxial polydactyly, and dysplastic nails and teeth. It is a rare autosomal recessive disorder due to mutations of EVC 1 and 2 genes located on chromosome 4p16. EVC syndrome is a chondroectodermal dysplasia. Congenital heart defects; especially atrial septal defect and single atrium occurs in 60% of affected individuals. Here we report a 5 year-old f...

Introduction: The association of precocious puberty and/or polycystic ovaries, delayed bone age and hypothyroidism is known as the Van Wyk and Grumbach syndrome (VWGS). Clinically this syndrome is a diagnostic challenge because hypothyroidism usually leads to pubertal and growth delay, whereas in case of VWGS hypothyroidism it leads to growth delay and precocious puberty. We report a boy with long-standing, untreated hypothyroidism who presented with precocious puberty.<p ...