Endocrine Abstracts

Introduction: Thyroid gland involvement by Langerhans Cell Histiocytosis (LCH) is a very rare condition. It occurs by thyroid infiltration that may result in hypothyroidism. LCH may be also related to neoplastic processes such as leukemias or lymphomas. However, the association with papillary thyroid carcinoma (PTC) is exceptional. We introduce a case and review the reported cases of this association.Case report: We describe a 33 year old patient diagnos...

IntroductionMultifocality is a common finding in papillary thyroid carcinoma (PTC), but its biological significance is not well established. In some cases not all foci present the same histological pattern.ObjectiveTo study the different histological patterns and molecular profiles of multifocal PTC (mPTC).Material and methodsAll patients with a confirmed diagnosi...

Introduction: Classically, risk stratification in papillary thyroid carcinoma (PTC) assigned the same magnitude of risk to all patients with regional lymph node involvement (N1 disease). However, specific lymph node characteristics (such as size, number, extension, etc.) will allow individualizing treatment and follow-up. One-Step Nucleic Acid Amplification (OSNA) measures the number of copies of mRNA of cytokeratin 19 (CK19) as a marker of lymph node metastasis. Thus, copy nu...

Introduction: Most thyroid cancer (TC) patients have a good prognosis, but some of them show aggressive behavior and are resistant to treatment. Still no effective biomarkers are available to predict which patients will progress. Epigenetic alterations are a hallmark of cancer, and profiling DNA methylation has allowed a better understanding of the epigenetic landscape of TC and its influence in TC progression. However, bulk DNA methylomes include information not only from tum...

Background: The Ectopic ACTH Syndromes (EAS) often associated with severe hypercortisolism are really a challenge.Case presentation: We report the case of a 48-year-old woman, newly diagnosed with hypertension, hypokalemia despite renin-angiotensin blockers intake, and complaints of intense fatigue, muscular weakness, and easy bruising, which worse in four months. EAS was biochemically confirmed, but two urinary catecholamines collection were negatives d...

Introduction: The relationship between the BRAF gene mutation in papillary thyroid cancer (PTC) and the presence of lymph node metastasis (LNM) is a subject of controversy.Objective: To analyse the influence of BRAF mutation status in the characteristics of lymph nodes in patients with PTC submitted to lymph node dissection (LND).Material and methods: Lymph nodes obtained from 20 patients (12 females, mean age 50±15 y...

Background: Differentiated thyroid cancer (DTC) is usually associated with an excellent prognosis. The main cause of death is due to distant metastases, but distant metastatic DTC (dmDTC) presents an interpatient heterogeneity. Some patients with distant metastases live with stable disease for many years, while others die very early. Still no effective biomarkers are available to predict either which patients will eventually develop distant metastases or what will be the final...

The newly created NIFTP category (non-invasive follicular thyroid neoplasm with papillary-like nuclear features) has had a notorious impact in the management of thyroid neoplasms. Its incidence appears to be higher in western countries than Asiatic, but there are few studies including more than one institution.Objectives: To evaluate retrospectively the incidence of NITFP in a multicentre study in two adjacent countries as well as to compare th...