Euthyroid athyroxinemia – a novel endocrine syndrome

Euthyroid athyroxinemia – a novel endocrine syndrome

A 55-year-old female was referred with abnormal thyroid function tests (TFTs); the free thyroxine level (FT4) was undetectable <3.3 pmol/L (normal: 7.9-14.4), while her FT3, TSH and urinary iodine levels were normal. She was clinically euthyroid with a large soft lobulated goitre that had been present for more than thirty years. She received an injection of recombinant human TSH (rhTSH) followi...

Sick euthyroid syndrome pdf

Review Article Euthyroid Sick Syndrome

Abnormalities in the circulating thyroid hormone concentration, without associated pituitary or thyroid disease, are seen in a variety of nonthyroidal illnesses (NIH). These abnormalities may be low plasma triiodothyronine (T3), low thyroxine (T4) or a combination of both, with an inappropriately normal plasma thyrotropin (TSH). These could be because of various factors acting on monodeiodinase...

Euthyroid pretibial myxedema and EMO syndrome.

EMO syndrome is a rare extrathyroid syndrome, seen in only 1% of patients affected by extrathyroid complications of Graves' disease. A 73-year-old woman presented with a 1-year history of asymptomatic local swellings on her legs and feet. Physical examination revealed moderate proptosis and multiple, firm subcutaneous nodules of 1 to 5 cm in diameter located on the anterior and medial aspects o...

Clinical review 86: Euthyroid sick syndrome: is it a misnomer?

Alterations in thyroid function tests are very common in patients with NTI. Multiple, complex, and incompletely understood mechanisms are involved in these abnormalities. Knowledge of these abnormalities is necessary to avoid errors in the diagnosis of thyroid disease. Measurement of serum TSH, free T4, and free T3 levels by direct equilibrium dialysis/RIA methods probably yield most useful (ac...