Endocrine Abstracts

Introduction: Intraoperative identification of neck lesions in patients who have undergone previous neck surgery is particularly difficult, because of operative scarring and distorted anatomy. Radioguided occult lesion localisation (ROLL) involves the preoperative intratumoral ultrasound-guided injection of a radioactive tracer. In the present study, we investigated the efficacy of roll in two patients with papillary thyroid cancer (PTC) who underwent previous neck exploration...

Objective: Oxidative stress has been implicated in the pathogenesis of several immune-mediated disorders, including autoimmune thyroid disease. Aim of our study was to investigate the relationship between dietary habit and redox homeostasis, in relationship with thyroid autoimmunity.Materials and methods: We enrolled 200 healthy subjects (173 F, mean age 35 ± 12). None of them was under any pharmacological treatment. Exclusion criteria: any infectio...

Introduction: Non-islet cell tumor induced hypoglycemia (NICTH) is a paraneoplastic phenomenon involving many types of tumors. It is associated with the secretion of incompletely processed precursors of IGF-2 resulting in a persistent insulin-like activity and hypoglycemia. Most commonly, IGF-2–linked hypoglycemia has been observed in patients with solid mesenchymal or epithelial tumors. Typically, elevated IGF-2 levels are associated with suppressed plasma levels of insu...

Introduction: Parathyroidectomy is the only curative treatment for primary hyperparathyroidism (pHPT) and has been traditionally performed through bilateral neck exploration (BNE). However, with the use of intraoperative parathyroid hormone (IOPTH) assay along with preoperative localization exams, minimally invasive surgery can be performed with good surgical success rate.Aim: To evaluate the usefulness of IOPTH assay in guiding adequate parathyroidectom...

Introduction: Hypoparathyroidism (hypoPTH) is one of the most feared iatrogenic complications of the surgical treatment for thyroid cancer (TC). Despite supplementation with calcium salts and calcitriol, hypoPTH seems to be associated with a negative impact on quality of life (QoL), which has not been evaluated in the Portuguese patients.Objectives: To evaluate the impact of hypoPTH on the QoL of Portuguese patients with TC and its correlation with serum...

Introduction: The bidirectional relationship of risk between breast cancer (BC) and thyroid cancer (TC) has been debated. Estrogens are proposed as agents implicated in the risk of developing TC promoting thyroid tumorigenesis. Therapies that reduce the effect of estrogens on their receptors in cancer cells are widely used.Objective: To correlate the use of hormonal therapy in BC with the prevalence of TC.Material and Methods: We p...

Introduction: Caloric restriction combined with overtraining can result in a total body energy deficit, which in turn is associated with multiple deleterious endocrine consequences, including hypogonadotropic hypogonadism. This can be a reversible cause of primary infertility, but its occurrence in men is still poorly recognized.Case Report: We report a case of a 39-year-old male evaluated in an urology appointment for primary infertility. He had a histo...

Introduction: Medullary thyroid carcinoma (MTC) is a rare neuroendocrine tumor (1-2% of all thyroid carcinomas), which arises from calcitonin-producing C cells. Calcitonin (CT) and carcinoembryonic antigen (CEA) are used as tumor markers in the follow-up of patients with MTC. Non-secretory forms of MTC are very rare, accounting for less than 1% of the cases.Case Report: A 53-year-old man underwent left thyroid lobectomy for a 1.1 cm thyroid nodule subjec...

Introduction: Adrenocortical carcinoma (ACC) is a rare endocrine malignancy with poor prognosis. Objective: The aim of this study is to characterize patients with ACC followed at a tertiary center. Material and Methods: Retrospective analysis of clinical records of patients with histopathological diagnosis of ACC followed in our clinic. Results and conclusions: We reviewed 11 patients. The average age at diagnosis was 57.3±15.2 years and 63.6% were females. Seven patients...

Introduction: Primary hyperparathyroidism (pHPT) is the most common cause of hypercalcemia in the outpatient setting and is a frequent endocrine disorder. Large cohort studies of pHPT patients in the Portuguese population are scarce. Aim: To characterize patients with pHPT followed at a tertiary center.Material and Methods: Retrospective analysis of clinical records of patients with pHPT followed in our hospital from 2003 to 2021. ...