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A thyroidectomy is an operation that involves the surgical removal of all or part of the thyroid gland. In general surgery, endocrine or head and neck surgeons often perform a thyroidectomy when a patient has thyroid cancer or some other condition of the thyroid gland (such as hyperthyroidism) or goiter. Other indications for surgery include ...
A large majority of the thyroid may be removed (subtotal thyroidectomy) to treat the hyperthyroidism of Graves' disease, or to remove a goiter that is unsightly or impinges on vital structures. [citation needed] A complete thyroidectomy of the entire thyroid, including associated lymph nodes, is the preferred treatment for thyroid cancer.
The syndrome can present with variable symptoms, even between members of the same family harboring the same mutation. [1] Typically most or all tissues are resistant to thyroid hormone, so despite raised measures of serum thyroid hormone the individual may appear euthyroid (have no symptoms of over- or underactivity of the thyroid gland).
As the free amount reflects the amount available to body tissues, the most treatment-relevant measures for thyroid disorders are Free T 3 and Free T 4. [68] Typically, Free T 4 is the preferred test for hypothyroidism, [ 69 ] as Free T 3 immunoassay tests are less reliable at detecting low levels of thyroid hormone, [ 70 ] and they are more ...
If ultrasound results are equivocal or unclear, or if the thyroid nodule is small (typically less than 1 cm), the nodule can be monitored over time with serial ultrasounds. [10] Ultrasound has a sensitivity of 64-77% and a specificity of 82-90% for the detection of thyroid cancer. [ 10 ]
In such a case a TRH stimulation test, in which TRH is given and TSH levels are measured at 30 and 60-minutes after, may be conducted. [84] T 3 and T 4 can be measured directly. However, as the two thyroid hormones travel bound to other molecules, and it is the "free" component that is biologically active, free T 3 and free T 4 levels can be ...
About 70% of affected cats also have enlarged thyroid glands . 10% of cats exhibit "apathetic hyperthyroidism", which is characterized by anorexia and lethargy. [ 65 ] The same three treatments used with humans are also options in treating feline hyperthyroidism (surgery, radioiodine treatment, and anti-thyroid drugs).
After several case reports in the 18th and 19th centuries, periodic paralysis was first described in full by the German neurologist Karl Friedrich Otto Westphal (1833–1890) in 1885. [ 7 ] [ 8 ] In 1926 the Japanese physician Tetsushiro Shinosaki, from Fukuoka , observed the high rate of thyroid disease in Japanese people with periodic paralysis.