Endokrynol Pol
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Cystic pancreatic tumors are detected with increasing frequency and remain a clinical problem. Since they have different potential of malignancy the management and decision making process is a hard task. ⋯ This review tries to answer the question are the cystic pancreatic neuroendocrine tumors different entity from solid tumors of neuroendocrine origin. The management and differential diagnosis of these neoplasms with special focus on features on imaging studies allowing preoperative diagnosis are discussed.
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Review
The role of kisspeptin signalling in the hypothalamic-pituitary-gonadal axis--current perspective.
The discovery of kisspeptins in the recent past remoulded current understanding of the neuroendocrine axis relating to the regulation of human puberty and reproduction. Kisspeptins have been recognised to act upstream of GnRH and have been shown to play a vital role in the control of the hypothalamic-pituitary-gonadal axis via regulation of gonadotrophin secretion, onset of puberty, and control of fertility. KNDy (kisspeptin/neurokinin-B/dynorphin) neurons have been suggested to modulate GnRH pulsatile secretion, which is required to support reproductive function in both sexes. ⋯ Kisspeptins have also been identified in several peripheral reproductive organs, indicating their role in modulation of ovarian function, embryo implantation, and placentation, but a great deal of work remains to be done to explore further in this regard, and the evidence is only available from studies done on animal models. In this review we will mainly focus on current available evidence related to the role of kisspeptins in controlling GnRH pulse frequency, specifically their role in puberty, fertility, and reproduction. We will also be appraising other factors that regulate the kiSS1/Kisspeptin/GPR-54 system.
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Gender identity disorder (GID, transsexualism) is a multidisciplinary problem of an unclear aetiology. Although the diagnosis of GID is generally established by psychiatrists, the diagnostic team always includes an endocrinologist, who is responsible for hormonal therapy. Hormonal therapy is the first step in the sex reassignment procedure and requires careful monitoring in the initial phase and in later years of treatment. In this paper we review the latest aspects of the diagnosis and treatment of transsexualism and the most common complications of hormonal intervention.
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The paper presents actual data concerning osteoporotic fractures (definitions, causes, epidemiologic and clinical data, consequences, treatment) particulary data about the most common fractures (distal forearm, vertebral and proximal hip fractures).
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Medullary thyroid cancer is a neuroendocrine tumour originating from the parafollicular C cells of the thyroid gland that accounts for about 5-10% of all thyroid carcinomas. It may occur either sporadically (75%) or in familial forms (25%) in familial medullary thyroid carcinoma and multiple endocrine neoplasia types 2A and 2B. Distinct clinical phenotypes in hereditary medullary thyroid cancer result from different missense germline mutations in the RET protooncogene. ⋯ Total thyroidectomy with local nodal dissection leads to achievement of biochemical cure in more than 80% of cases. The tumour does not take up radioactive iodine, is relatively radioresistant, and there is no known effective systemic therapy for this cancer. The purpose of this article is to summarise the present state of knowledge on the etiology, clinical presentation, management, prognosis, and genetics of medullary thyroid cancer.