Ectopic thyroid tissue is a rare entity resulting from developmental defects at early stages of thyroid gland embryogenesis, during its passage from the floor of the primitive foregut to its final pre-tracheal position. It is frequently found around the course of the thyroglossal duct or laterally in the neck, as well as in distant places such as the mediastinum and the subdiaphragmatic organs. Although most cases are asymptomatic, symptoms related to tumor size and its relationship with surrounding tissues may also appear. Any disease affecting the thyroid gland may also involve the ectopic thyroid, including malignancy. The clinician must distinguish between ectopic thyroid and metastatic deposits emerging from an orthotopic gland, as well as other benign or malignant masses. Thyroid scintigraphy plays the most important role in diagnosing ectopy, but ultrasonography contributes as well. In cases of symptomatic disease, surgery is the treatment of choice, followed by radioiodine ablation and levothyroxine suppression therapy in more refractory cases. This review provides current understanding about the wide clinical spectrum of this rare condition, also referring to optimal diagnostic approach, differential diagnosis, and management strategies.
George Noussios, Panagiotis Anagnostis, Dimitrios G Goulis, Dimitrios Lappas and Konstantinos Natsis
Andromachi Vryonidou, Stavroula A Paschou, Giovanna Muscogiuri, Francesco Orio and Dimitrios G Goulis
The normal function of the female reproductive system is closely linked to energy homeostasis with the ultimate scope of fertility and human race perpetuation through the centuries. During a woman's lifetime there are normal events such as puberty, pregnancy and menopause which are related to alterations in energy homeostasis and gonadal steroids levels followed by increase of body fat and insulin resistance, important components of metabolic syndrome (MetS). Pathological conditions such as premature adrenarche, polycystic ovary syndrome and gestational diabetes also present with shifts in gonadal steroid levels and reduced insulin sensitivity. The aim of this review is to discuss these conditions, both normal and pathological, analyzing the changes or abnormalities in ovarian function that coexist with metabolic abnormalities which resemble MetS in relationship with environmental, genetic and epigenetic factors.
Konstantinos A Toulis, Dimitrios G Goulis, Christos A Venetis, Efstratios M Kolibianakis, Roberto Negro, Basil C Tarlatzis and Ioannis Papadimas
To investigate whether thyroid autoimmunity (TAI) is associated with increased risk for spontaneous miscarriage in subfertile, euthyroid women undergoing IVF.
Meta-analysis of observational studies.
Four prospective studies that reported data on 1098 subfertile women undergoing IVF (141 with TAI and 957 controls) were included in the meta-analysis.
Main outcome measure
Miscarriage risk ratio (RR).
Secondary outcome measures
Clinical pregnancy rate and delivery rate.
Euthyroid, subfertile women with TAI undergoing IVF demonstrated significantly higher risk for miscarriage compared with controls (four studies–fixed effects RR: 1.99, 95% confidence interval: 1.42– 2.79, P<0.001). No significant difference in clinical pregnancy and delivery rates was detected between groups.
Based on the currently available evidence, it appears that the presence of TAI is associated with an increased risk for spontaneous miscarriage in subfertile women achieving a pregnancy through an IVF procedure.
Panagiotis Anagnostis, Konstantinos Christou, Aikaterini-Maria Artzouchaltzi, Nifon K Gkekas, Nikoletta Kosmidou, Pavlos Siolos, Stavroula A Paschou, Michael Potoupnis, Eustathios Kenanidis, Eleftherios Tsiridis, Irene Lambrinoudaki, John C Stevenson and Dimitrios G Goulis
Menopausal transition has been associated with a derangement of glucose metabolism. However, it is not known if early menopause (EM, defined as age at menopause <45 years) or premature ovarian insufficiency (POI, defined as age at menopause <40 years) are associated with increased risk of type 2 diabetes mellitus (T2DM). To systematically investigate and meta-analyze the best evidence regarding the association of age at menopause with the risk of T2DM.
A comprehensive search was conducted in PubMed, CENTRAL and Scopus, up to January 31, 2018. Data are expressed as odds ratio (OR) with 95% confidence intervals (CI). The I 2 index was employed for heterogeneity.
Thirteen studies were included in the qualitative and quantitative analysis (191 762 postmenopausal women, 21 664 cases with T2DM). Both women with EM and POI were at higher risk of T2DM compared with those of age at menopause of 45–55 years (OR: 1.15, 95% CI: 1.04–1.26, P = 0.003; I 2: 61%, P < 0.002 and OR: 1.50, 95% CI: 1.03–2.19, P = 0.033; I 2: 75.2%, P < 0.003), respectively). Similar associations emerged when women with EM and POI were compared with those of age at menopause >45 years (OR: 1.12, 95% CI: 1.01–1.20, P < 0.02; I 2: 78%, P < 0.001 and OR: 1.53, 95% CI: 1.03–2.27, P = 0.035; I 2: 78%, P < 0.001), respectively).
Both EM and POI are associated with increased risk of T2DM.
Evanthia Diamanti-Kandarakis, Maurizio Dattilo, Djuro Macut, Leonidas Duntas, Efstathios S Gonos, Dimitrios G Goulis, Christina Kanaka Gantenbein, Marianna Kapetanou, Eftychia Koukkou, Irene Lambrinoudaki, Marina Michalaki, Shahla Eftekhari-Nader, Renato Pasquali, Melpomeni Peppa, Marinella Tzanela, Evangeline Vassilatou, Andromachi Vryonidou and COMBO ENDO TEAM: 2016
Aging and its underlying pathophysiological background has always attracted the attention of the scientific society. Defined as the gradual, time-dependent, heterogeneous decline of physiological functions, aging is orchestrated by a plethora of molecular mechanisms, which vividly interact to alter body homeostasis. The ability of an organism to adjust to these alterations, in conjunction with the dynamic effect of various environmental stimuli across lifespan, promotes longevity, frailty or disease. Endocrine function undergoes major changes during aging, as well. Specifically, alterations in hormonal networks and concomitant hormonal deficits/excess, augmented by poor sensitivity of tissues to their action, take place. As hypothalamic–pituitary unit is the central regulator of crucial body functions, these alterations can be translated in significant clinical sequelae that can impair the quality of life and promote frailty and disease. Delineating the hormonal signaling alterations that occur across lifespan and exploring possible remedial interventions could possibly help us improve the quality of life of the elderly and promote longevity.