ESPE Abstracts

Background: Subtle impairments in the thyroid function of pregnant women are associated with poorer scores on mental developmental scales in their children at age 2–3 years, and with reduced performance in a simple reaction time test at 5–6 years. However, associations with school performance estimates have never been studied.Objective and hypotheses: We aimed to assess the effect of normal variation in the maternal thyroid function during earl...

Background: Transient or permanent hypoparathyroidism is one of the most well-known complications of total thyroidectomy and may lead to symptomatic hypocalcaemia. Treatment of post-thyroidectomy hypocalcaemia usually consists of postoperative calcium and/or vitamin D supplementation. In 2013 we implemented prophylactic pre-thyroidectomy calcitriol supplementation for all children undergoing total thyroidectomy at Amsterdam UMC. The objective of this study was...

Central hypothyroidism can be best defined as lower than desirable thyroid hormone production and secretion because of insufficient stimulation of a normal thyroid gland by a defective pituitary or hypothalamus, resulting in a too low plasma or serum (free) thyroxine (FT4) concentration accompanied by a more or less normal thyrotropin (TSH) concentration. Central hypothyroidism can occur isolated or as part of multiple pituitary hormone deficiency and can be a congenital or ac...

Background: ROHHADNET syndrome is characterised by rapid onset childhood obesity, hypoventilation, variable hypothalamic-pituitary and autonomic dysfunction, and neuroendocrine tumors in 30–40%. Autoimmunity and paraneoplastic syndrome have been proposed as possible pathophysiological mechanisms, but the exact aetiology remains unclear.Objective and hypotheses: We present the clinical course of ROHHADNET syndrome in a 17-year-old girl, with consecut...

Objective: Comparison of studies on remission rates in pediatric Graves’ disease is complicated by lack of uniformity in treatment protocols, remission definition, and follow-up duration. We performed a systematic review on remission rates in pediatric Graves’ disease and attempted to create uniformity by recalculating remission rates based on an intention-to-treat analysis. Results: Of 1,890 articles, 29 articles consist...

This presentation briefly gives an overview of typical gynaecological issues and fertility options of transgender adolescents.Typical gynaecological complaints and treatment options will be addressed: e.g. amenorrhea induction prior to cross-sex hormones, irregular bleeding, dysmenorrhea, vaginal discharge but also the limitations of gynaecological examination in female asssigned adolescents.National and international organizations...

Central hypothyroidism (CeH) can be defined as a lower than desirable secretion of thyroid hormone by a normal thyroid gland resulting from (quantitative or qualitative) insufficient TSH secretion. Causes are congenital and acquired functional or anatomic defects of the hypothalamus, pituitary gland or both. CeH can be difficult to diagnose, especially in children without a history of brain defects or brain damaging treatment (e.g. irradiation), and when plasma FT4 concentrati...

Background: Pubertal growth and adult height are important to many transgender adolescents undergoing medical transition. However, few studies are available on the impact of puberty suppression (PS) with GnRH analogues (GnRHa) and hormonal therapy (HT) with testosterone on growth. In this longitudinal cohort study, we investigated the effect of PS and HT on growth and adult height in transgender boys.Methods: A total of ...

Background: Graves’s disease (GD) is the most common cause of hyperthyroidism. Maximal 30% of pediatric GD patients achieve remission with anti-thyroid drugs. The majority of patients therefore require definitive treatment. Both thyroidectomy and radioactive iodine (RAI) are often used as definitive treatment for GD. However, data on efficacy, and short- and long-term side effects of RAI treatment for pediatric GD are relatively scarce.Methods: A ...

Context: Transgender adolescents can be treated with puberty suppression (PS) using GnRH agonists (GnRHa), and subsequent hormone therapy (HT). Up to this date, it has not been described at what rate body composition in transgender adolescents changes during the first years of treatment. Also, it is unknown whether Tanner stage at which treatment is initiated, might affect this treatment outcome.Methods: Transgender adol...