Endocrine Abstracts

Introduction: First described in 2009, IgG4-related thyroid disease includes several subcategories: Riedel’s thyroiditis, fibrous variant of Hashimoto thyroiditis (FVHT), IgG4-related Hashimoto thyroiditis (HT) and Graves’ disease with elevated IgG4. It is rare, with most cases described in Japan and characterized by increased IgG4 plasma cells at immunostaining.Case Report: A 59-year-old Caucasian women, without known Asian ancestry, was obser...