Syndromes of Impaired Sensitivity to Thyroid Hormone

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Syndromes of Impaired Sensitivity to Thyroid Hormone

Abstract Thyroid hormone (TH) synthesis and release is under feedback regulation by the hypothalamic input to the pituitary via thyroid-stimulating hormone (TSH) and thyroid-releasing hormone (TRH) resulting in pituitary secretion…

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States of Pituitary Hypofunction

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on States of Pituitary Hypofunction

Abstract Hypopituitarism is defined as the deficiency of one or more of the anterior pituitary hormones: growth hormone, thyroid stimulating hormone, lutenizing hormone, follicle stimulating hormone, prolactin, and adrenocorticotrophic hormone….

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Diabetes Insipidus

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Diabetes Insipidus

Abstract Diabetes insipidus is characterized by the excretion of abnormally large volumes of dilute urine under conditions of ad libitum fluid intake. In rare cases, it is caused by mutations…

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Molecular Diagnosis of Thyroid Cancer

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Molecular Diagnosis of Thyroid Cancer

Abstract Fine-needle aspiration cytology (FNAC) represents the gold standard for the evaluation of thyroid nodules, although 20% to 30% of FNAC have indeterminate cytology, recognizing the problem of the correct…

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Developmental Abnormalities of the Thyroid

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Developmental Abnormalities of the Thyroid

Abstract Developmental anomalies of the thyroid gland (thyroid dysgenesis) underlie the majority of cases of congenital hypothyroidism. Only a small number of monogenic defects have been shown to result in…

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Mechanisms of Mutation

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Mechanisms of Mutation

Abstract Mutation is a sudden, inheritable change in DNA sequence. Single nucleotide variation (SNV), insertion or deletion of a few nucleotides (indels), rearrangements, change in the number of copies of…

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Hypoglycemia

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Hypoglycemia

Abstract Hypoglycemia is a disorder with manifold potential etiologies, from environmental to inherited, from presenting in isolation to presenting as a small part of a clinical syndrome, from insulin excess…

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Functioning Pituitary Adenomas

Sep 7, 2019 by in ENDOCRINOLOGY Comments Off on Functioning Pituitary Adenomas

Abstract Many molecular genetic abnormalities have been recognized in the setting of anterior pituitary adenomas. However, pituitary adenomas with heritable genetic causes are rare and have been described most often…

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