colloid nodular goiter…

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endocrine glands, thyroid enlargement, scintiscan, thyroid gland, endemic goiter, colloid nodular goiter, enlargement of an otherwise normal thyroid gland, thyroid gland is unable to make enough thyroid hormone, attempt to compensate by enlarging, thyroid enlargement, certain environmental factors, a colloid nodular goiter occurs, the thyroid gland is unable to meet the metabolic demands, sufficient hormone production, thyroid gland compensates by enlarging, overcomes mild deficiencies of thyroid hormone, thyroid gland is then re-exposed to iodine, nodules, produce thyroid hormone independently, nodules, produce too much thyroid hormone, causing thyrotoxicosis, a toxic nodular goiter, colloid nodular goiters, endemic goiters, inadequate iodine in diet, tend to occur in certain geographical areas, iodine-depleted soil, areas away, sea coast, an area is defined, endemic, goiter, more than 10 % of children aged 6 to 12 years have goiters, small to moderate-sized goiters, relatively common, great lakes, midwest, intermountain regions were once known, the "goiter belt", routine use of iodized table salt now helps, prevent this deficiency, risk factors, female, older than 40, having an inadequate dietary intake of iodine, living in an endemic area, having a family history of goiters, thyroid enlargement, a single small nodule to massive enlargement, breathing difficulties from compression, the trachea, rare, swallowing difficulties from compression, the esophagus, rare, neck vein distention, dizziness, the arms, raised, above the head, large goiter, thyroid scan, thyroid ultrasound, blood tests to monitor thyroid function, thyroid stimulating hormone, underactive, overactive, radioactive iodine uptake, urinary excretion of iodine, thyroid hormone replacement therapy, iodine deficiency, hormone replacement inhibits thyroid stimulating hormone, tsh, allows the thyroid to recover, a large goiter that is unresponsive to medical management, restricts swallowing, breathing, require partial, complete removal, the thyroid gland, goiter is producing too much thyroid hormone, radioactive iodine, antithyroid medication, surgery necessary, prognosis is good, a persistent goiter, become toxic, causing symptoms of excess thyroid hormones to develop, sudden enlargement of a thyroid gland, indicate internal bleeding, immune disorder, immediate medical attention, progressive thyroid enlargement, development of hardened nodules, indicate thyroid malignancy, cancer, single, dominant nodule, a nodule is enlarging, a fine needle biopsy, performed to exclude malignancy, a simple goiter, progress to a toxic nodular goiter, thyrotoxicosis, occur spontaneously, iodine re-exposure, medications amiodarone, lithium, affect thyroid function, signs of thyrotoxicosis develop, fever, increased pulse rate, palpitations, diarrhea, constipation, nausea, fatigue, dry skin, sweating, tremors, anxiety, agitation, shortness of breath, use iodized salt, foods supplemented, iodine.