Endocrine Abstracts

Introduction: Amiodarone is an antiarrhythmic iodine-rich drug, known to induce thyroid dysfunction both due to its high iodine content and through amiodarone-induced thyrotoxicosis (AIT), being this latter process classified into three different types. Type 1 is associated with increased thyroid hormone synthesis; type 2 is a destructive process with thyroid hormone release and type 3 is thought to be a mixture of the former two. Since treatment options are different, there h...

Paediatric Graves’ disease (PGD) is an uncommon autoimmune disorder with a multifactorial origin. Although, in some autoimmune endocrinophaties the seasonality of month of birth (MOB) distribution differed from the general population, this association has not been study in PGD. The aim of this work was to analyse the impact of seasonality of MOB on PGD incidence in Portugal.In 2013, the Portuguese Paediatric Society of Diabetes and Endocrinology und...

Spindle cell oncocytoma (SCO) is a rare entity with just 18 cases reported in the literature. It was first described in 2002 and was codified as a separate diagnostic entity in the 2007 WHO classification of brain tumours. SCO is a nonadenomatous sellar neoplasm with rich vascularization and intra and supra-sellar infiltration. Usual clinical presentation consists of headache, visual field defects and pan-hypopituitarism. The preoperative diagnosis is difficult due to a lack o...

Aim: Dose corrected for thyroid gland size is one of the methods used to determine radioactive iodine (RAI) activity for patients with Graves disease (GD). This study was aimed to investigate the real-world success rate of this method and the predictors of success after first treatment.Methods: This is a retrospective study of 80 patients with GD treated between 2014 and 2020 in a tertiary referral hospital in Almada, Portugal. The successful group was d...

Introduction: The best timing for PRRT (peptide receptor radionuclide therapy) in the case of pancreatic neuroendocrine tumors (panNETs) is still to define, as randomized prospective trials are lacking. Recent studies suggest that some systemic therapies can affect response to PRRT, favoring an earlier use of the latter.Objective: To determine the efficacy and toxicity of PRRT, comparing its results when used as a second line systemic therapy (a...

Thyroid storm (TS) is one extreme of a continuum beginning with thyrotoxicosis. It’s rarely caused by exogenous thyroid hormone intake (ETHI). Aggressive medical therapy is the cornerstone of treatment; nevertheless, it might not be sufficient. Plasmapheresis is an extracorporeal technique that can rapidly lower thyroid hormone levels. The aim of this study was to assess the efficacy of plasmapheresis in TS secondary to ETHI. We evaluated retrospectively all TS cases (Bur...

Introduction: Pheochromocytomas (PHEO) and paragangliomas (PGL) are rare catecholamine-secreting tumors. Some authors proposed that there is a positive linear relationship between tumor size and measurements of metanephrines and an absence of association with catecholamine levels.Objectives: To review and characterize patients diagnosed with PHEO and PGL in Garcia de Orta Hospital. To determine the relationship between tumor size and measurements of urin...

The use of 18F-fluorodeoxyglucose positron emission tomography (18F-FDG–PET) has increased the detection of thyroid incidentalomas (TI). These are associated with a risk of malignancy between 25 and 50%. Some studies show an association between SUVmax uptake and malignancy.The objective of this study was to determine the prevalence of malignancy on 18F-FDG–PET positive thyroid nodules and to evaluate the relatio...

Background: Septo-optic dysplasia (SOD), also known as de-Morsier syndrome, is a rare congenital disorder characterized by any combination of optic nerve hypoplasia, pituitary dysfunction and midline abnormalities of the brain. Clinical diagnosis requires the presence of at least two of the features. This disorder is equally prevalent in males and females, with a reported incidence of 1/10,000 live births. There is wide variation in the severity of the clinical features found....

Introduction: Multiple endocrine neoplasia (MEN) is a rare genetic syndrome characterized by occurrence of tumors involving two or more endocrine glands. Four types are described: MEN1, MEN2, MEN3 and the recently identi&#-1279;ed MEN4. Due to the complexity of the syndromes, it is difficult to manage these patients. Our objective was to describe the clinical features of individuals from 7 families with a diagnosis of MEN1 or MEN2 and identify current challenges in clinical pr...