Endocrine Abstracts

Introduction: Pheochromocytoma (PHEO) is a rare neuroendocrine tumor, which presents with various clinical phenotypes, depending on the size of the tumor, the secreting activity, and the secreting product. Large PHEOS exhibit symptoms related to mass effects and malignant PHEOS symptoms related to metastases. Some PHEOS present as adrenal incidentalomas (AI) or with an unusual clinical phenotype.Case report: A 54-year-old Russian female presented with se...

Introduction: Endogenous subclinical hypercortisolism occurs in 5-30% of patients with adrenal incidentalomas. Adrenal adenoma is the commonest cause of autonomous cortisol secretion (ACS), while primary bilateral macronodular adrenal hyperplasia (PBMAH) is rare. In both, ACS results from activation of the cAMP/PKA pathway. This may be triggered by ligands, other than ACTH, acting upon aberrant G-protein coupled receptors (GPCRs), which may also control locally produced ACTH i...

Introduction: IgG4-related thyroiditis (IgG4-RTD) is a rare fibroinflammatory disorder. It is characterized by dense lymphocyte infiltration (mainly IgG4+ plasma cells), enlargement and dysfunction of the thyroid gland. IgG4-RTD includes mostly cases of Hashimoto’s (HT) but also of Riedel’s and Graves’ thyroiditis. Diagnosis is set according to imaging and histopathological criteria. Papillary thyroid carcinoma (PTC) is the most common form of thyroid cancer (~9...

Background: Metastatic pheochromocytomas (PCs) and paragangliomas (PGLs) are rare neuroendocrine neoplasms with a <1:106 incidence, defined by the presence of metastatic disease besides recurrent or locally invasive disease.Aim: Retrospective analysis of clinical, biochemical/hormonal, imaging, genetic and histopathological features of patients with malignant PCs/PGLs diagnosed over 15 years.Results: Thirteen patient...

Introduction: Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant hereditary disorder, associated with mutations of the MEN1 gene, characterised by the combined occurrence of tumours of the parathyroid glands, the pancreatic islet cells and the anterior pituitary.Aim: To identify MEN1 gene mutations and characterize clinical manifestations in Greek patients with MEN1.Patients and methods: We studied 4 ...

Purpose: We aim at prospectively comparing the detection rate of GLP1-R PET/CT vs GLP1-R SPECT/CT vs standardized contrast enhanced 3T-MRI in patients with suspected insulinoma.Methods: 40 patients with neuroglycopenic symptoms due to endogenous hyperinsulinemic hypoglycemia were enrolled.3T-MRI was performed. Afterwards patients received SPECT/CT after injection of 111In-DOTA-exendin-4 and PET/CT after injection of <sup...

Purpose: The aim of our study is to compare the detection rate of GLP-1R PET/CT and GLP-1R SPECT/CT in patients with a biochemically proven endogenous hyperinsulinemic hypoglycemia. Preliminary results of an ongoing study are reported.Methods: Thirty-three patients (25 females, 8 males, age range 18–80 years, mean 49 years) with neuroglycopenic symptoms due to endogenous hyperinsulinemic hypoglycemia were enrolled (ClinicalTrials.gov, NCT02127541).<...

Objective: Quality of life is currently considered a major factor in the assessment of disease outcome. The aim was to assess quality of life in acromegaly and the effect of somatostatin analogues on it.Design: This study included 101 patients with acromegaly, mean age 59.51±1.35 years (mean ± S.E.M.), with a disease duration of 12.88±0.96 years. All subjects completed the Acromegaly Quality of Life Questionnaire (AcroQoL) w...

Introduction: Ultrasound-guided fine needle aspiration biopsy (US-FNAB) enables selective sampling of thyroid follicular cells while minimizing potential complications. Inadequate specimen sampling can lead to FNAB repeat. Our aim was to evaluate the morphological and cytological characteristics of thyroid nodules with US and rapid on-site evaluation of adequacy (ROSE).Methods: Two independent endocrinologists evaluated nodule characteristics of 171 US-F...

Introduction: Advanced glycation end products (AGEs) formation is accelerated in various pathological conditions characterized by insulin resistance (IR) and/or increased oxidative stress (OS). Hypothyroidism – overt (OH) or subclinical (SUH) – is associated with a variety of metabolic disorders leading to IR and increased OS.Aim: To estimate the εN-carboxymethyl-lysine (CML) levels, in subjects with OH and SUH and seek f...