Endocrine Abstracts

Background: Accurate diagnosis of an underlying cause of thyrotoxicosis is critical for targeted therapy. Thyroid radionuclide uptake scan is a useful second line investigation in patients who lack TSH receptor antibody. The uptake scan patterns identify patients who can be preferentially treated with anti-thyroid drugs (diffuse pattern - Graves’ disease) or radio-iodine treatment (patchy uptake - multinodular or localised uptake – toxic adenoma) or simple monitoring...

Background: Sporadic and familial autosomal dominant non-autoimmune hyperthyroidism (S/FANH) is caused by activating germline mutations in the TSH Receptor (TSHR) gene. These patients lack TSHR-Ab, show diffuse uptake on radionuclide thyroid scan and often lack positive family history due to variable penetrance. Because of these overlapping features, S/FANH is difficult to distinguished from Graves’ disease without autoimmune features. Ther...

Background: Sporadic and familial autosomal dominant non-autoimmune hyperthyroidism (S/FANH) is caused by activating germline mutations in the TSH Receptor (TSHR) gene. These patients lack TSHR-Ab, show diffuse uptake on radionuclide thyroid scan and often lack positive family history due to variable penetrance. Because of these overlapping features, S/FANH is difficult to distinguished from Graves’ disease without autoimmune features. Ther...