Searchable abstracts of presentations at key conferences in endocrinology

ea0092ps1-03-05 | Miscellaneous 1 | ETA2023

Thyroid dysfunction in head and neck squamous cell carcinoma patients after external radiotherapy: clinicopathological risk factors

Russo Fiore Adriana , Silvia Lima Carmen , Pereira Eduardo , Engelbrecht Zantut Wittmann Denise

Background: Radiotherapy (RT) with or without chemotherapy is a common treatment for head and neck squamous cell carcinoma (HNSCC) patients and it can cause adverse effects, including dysfunctions of thyroid. The aim of this study was to identify thyroid dysfunction among patients submitted to external RT for treatment of HNSCC, with serial evaluation of thyroid function.Material and methods: This is a retrospective longitudinal study of the follow-up of...

ea0092ps3-24-06 | Thyroid Eye Disease | ETA2023

Perceptions reported by graves’ disease euthyroid patients with ophthalmopathy: A qualitative study

Cesar Reis Juliano , Valladao Lucas , Casagrande Carla , Engelbrecht Zantut Wittmann Denise , Turato Egberto

Introduction: Knowing mental representations about the phenomenon of illness and medical care allows the clinical team to have better emotional handling of their patients, with gains in greater adherence to treatments. GravesÂ’ Ophthalmopathy is an inflammatory disease with primary involvement of the extraocular muscles and orbit, being the most frequent extrathyroidal manifestation of GravesÂ’ disease (GD). Many patients have psychological status changes even after su...

ea0084ps2-08-75 | Thyroid Cancer BASIC | ETA2022

PD-L1 and MCL-1 markers and the relationship with prognostic characteristics of differentiated thyroid carcinoma

Engelbrecht Zantut Wittmann Denise , Siqueira Barreto Icleia , Carolina Laus Ana , Moreno Daniel , Moma Camila , Maia Frederico , Vera Montalli Assumpcao Ligia , Reis Rui

Objectives: MCL-1 and PD-L1 proteins are related to carcinogenesis mechanisms in differentiated thyroid carcinoma (DTC). Tumor antigens stimulate the expression of PD-1 in immune cells, which binds to PD-L1 of tumor cells, inducing immune escape from the tumor. MCL-1, an anti-apoptotic member of the BCL-2 family and has a high oncogenic potential. The relationship of these markers with prognosis in DTC remains unknown. We aim to evaluate the clinical utility of immunohistochem...

ea0084ps2-08-76 | Thyroid Cancer BASIC | ETA2022

Double mutation of the TERT promoter in extremely aggressive papillary thyroid carcinoma

Engelbrecht Zantut Wittmann Denise , Carolina Laus Ana , Moreno Daniel , Siqueira Barreto Icleia , Moma Camila , Maia Frederico , Etchebehere Elba , Vera Montalli Assumpcao Ligia , Reis Rui

Objectives: BRAFV600E mutation is present in 50% of aggressive papillary thyroid carcinoma(PTC). TERT promoter (pTERT) mutations (C228T, C250T) are related to cancer growth and reduced overall- and disease-free survivals in differentiated thyroid carcinomas(DTC). We report a patient with an extremely aggressive PTC presenting in the primary lesion two pTERT mutations (C228T and C250T), and absence of BRAFV600E.<p class="abstext"...