Endocrine Abstracts

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...

Levothyroxine (L-T4) is the mainstay of treatment of hypothyroidism. Marked elevation of thyrotropin (TSH) in patients on high replacement doses is rare and can result from malabsorption, drug interaction or poor compliance. The levothyroxine absorption test is required to distinguish these causes and has proved to be safe. This test measures the serum free thyroxine (FT4) response to 1 mg of oral L-T4 over 4–24 h.Clinical cases: Case no 1: A 28-yea...

IntroductionThe toxic solitary thyroid nodule is a major cause of hyperthyroidism, especially in iodine-deprived regions. The most widely used therapy is iodine-131, which is effective in achieving normal thyroid function and reducing nodule dimensions, however, it may induce hypothyroidism. The aim of this study was to evaluate the outcomes of radioiodine therapy in patients with toxic solitary nodules and to determine predictive factors for the develop...

Introduction: It is universally accepted that calcitonin (CT), a hormone secreted by the parafollicular cells of the thyroid, is a specific, sensitive and early marker of Medullary Thyroid Carcinoma (CMT), with higher diagnostic accuracy than fine needle aspiration biopsy(FNAB). However, the routine measurement of serum CT during assessment of nodular thyroid disease (NTD) remains controversial due to rarity of this cancer and possible false positive results.<p class="abst...

IntroductionKetosis-Prone Diabetes (KPD) is a heterogeneous condition that shares clinical characteristics of type 1 and type 2 diabetes. It is usually a challenging diagnosis because patients are prone to develop diabetic ketoacidosis (DKA) without having the classic clinical phenotype of autoimmune type 1 diabetes.Case reportA Caucasian 26-years-old female with known history of renal transplant, morbid obes...

Introduction: Adrenocortical carcinoma (ACC) is a rare entity, usually associated with a poor prognosis. There are still many areas of uncertainty regarding its approach.Methods: A Portuguese ACC register was established in 2020, including information from 24 endocrine centres. Kaplan-Meier was used to calculate overall survival and recurrence; log- rank test to assess survival and progression free survival (PFS) differences between groups; cox-regressio...