Endocrine Abstracts

Introduction: Thyrotropinomas are usually considered when the TSH level is inappropriately elevated or normal in a hyperthyroid patient with increased serum T4 levels, regardless of the presence of visible tumor on imaging. The prevalence of these adenomas, which account for 0.5–3% of all pituitary tumors has been estimated to be around one case per million. Most thyrotroph adenomas are large and invasive at diagnosis, and present with signs and symptoms of an ...