A 57-yr-old male presented with hyperthyroidism (serum T4, 18 μg/dl) intractable by subtotal thyroidectomy. Workup 1 yr after thyroid surgery showed elevated values of plasma TSH (480 /μU/ml), αTSH (68 ng/ml), T4 (15.9 μg/dl), T3 (23... W Waldhäusl,P Bratuschmarrain,...
is approx 1–2 per 1000 women and 1 per 10,000 men, with higher rates in older individuals (1). Autoimmune (Hashimoto’s) thyroiditis is the cause of spontaneous primary hypothyroidism in the vast majority of cases. Postablative hypothyroidism after therapy for hyperthyroidism or thyroid surgery...
Levothyroxine was restarted at a dose of 137 mcg once a day and 1 month prior to admission TSH had decreased to 0.15 IU/mL. At admission she was clinically thyrotoxic with free T4 of >8 ng/dL (0.76-1.46) but the TSH was slightly elevated at 4.86 IU/mL. She complained of fatigue, ...
The past history of hypothyroidism and under optimal control and stable until 16-months ago, as well as normal fT3 suggests low likelihood of this. TSH-secreting pituitary adenoma (TSH-OMA) causing secondary hyperthyroidism was less likely in view of suppressed thyroglobulin levels ruling out an ...
Thyroid function testsrevealedhyperthyroidismwith TSH concentrations <0.000 μIU/mL, free T3 levels of 12.84 pg/mL, and free T4 levels of 2.84 ng/mL. No abnormalities inblood glucoseand electrolyte levels were detected. A braincomputed tomographyscan showed no meaningful abnormalities. Color-codedultra...
When severe or long-standing, the clinical diagnosis is straightforward, confirmed by the finding of elevated serum levels of thyrotropin (TSH) and depressed serum concentrations of free thyroxine (fT4) or the free T4 estimate (free T4 index or FTI). Circulating serum triiodothyronine (T3) ...
Kamata, K, Nagata, O, Ozaki, K, Nishiyama, K, Uezono, S, Ozaki, M (2003) Anesthetic management with propofol, fentanyl TCI and BIS in two cases of secondary hyperthyroidism due to TSH secretion from pituitary adenomas. Masui 52: pp. 852-856...